// This is the main rendering function that you have to implement and provide to ImGui (via setting up 'RenderDrawListsFn' in the ImGuiIO structure)
// If text or lines are blurry when integrating ImGui in your engine:
// - in your Render function, try translating your projection matrix by (0.5f,0.5f) or (0.375f,0.375f)
static void ImGui_ImplGlfwGL3_RenderDrawLists(ImDrawList** const cmd_lists, int cmd_lists_count)
{
if (cmd_lists_count == 0)
return;
// Setup render state: alpha-blending enabled, no face culling, no depth testing, scissor enabled
GLint last_program, last_texture;
glGetIntegerv(GL_CURRENT_PROGRAM, &last_program);
glGetIntegerv(GL_TEXTURE_BINDING_2D, &last_texture);
glEnable(GL_BLEND);
glBlendEquation(GL_FUNC_ADD);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glDisable(GL_CULL_FACE);
glDisable(GL_DEPTH_TEST);
glEnable(GL_SCISSOR_TEST);
glActiveTexture(GL_TEXTURE0);
// Setup orthographic projection matrix
const float width = ImGui::GetIO().DisplaySize.x;
const float height = ImGui::GetIO().DisplaySize.y;
const float ortho_projection[4][4] =
{
{ 2.0f/width, 0.0f, 0.0f, 0.0f },
{ 0.0f, 2.0f/-height, 0.0f, 0.0f },
{ 0.0f, 0.0f, -1.0f, 0.0f },
{ -1.0f, 1.0f, 0.0f, 1.0f },
};
glUseProgram(g_ShaderHandle);
glUniform1i(g_AttribLocationTex, 0);
glUniformMatrix4fv(g_AttribLocationProjMtx, 1, GL_FALSE, &ortho_projection[0][0]);
// Grow our buffer according to what we need
size_t total_vtx_count = 0;
for (int n = 0; n < cmd_lists_count; n++)
total_vtx_count += cmd_lists[n]->vtx_buffer.size();
glBindBuffer(GL_ARRAY_BUFFER, g_VboHandle);
size_t needed_vtx_size = total_vtx_count * sizeof(ImDrawVert);
if (g_VboSize < needed_vtx_size)
{
g_VboSize = needed_vtx_size + 5000 * sizeof(ImDrawVert); // Grow buffer
glBufferData(GL_ARRAY_BUFFER, g_VboSize, NULL, GL_STREAM_DRAW);
}
// Copy and convert all vertices into a single contiguous buffer
unsigned char* buffer_data = (unsigned char*)glMapBuffer(GL_ARRAY_BUFFER, GL_WRITE_ONLY);
if (!buffer_data)
return;
for (int n = 0; n < cmd_lists_count; n++)
{
const ImDrawList* cmd_list = cmd_lists[n];
memcpy(buffer_data, &cmd_list->vtx_buffer[0], cmd_list->vtx_buffer.size() * sizeof(ImDrawVert));
buffer_data += cmd_list->vtx_buffer.size() * sizeof(ImDrawVert);
}
glUnmapBuffer(GL_ARRAY_BUFFER);
glBindBuffer(GL_ARRAY_BUFFER, 0);
glBindVertexArray(g_VaoHandle);
int cmd_offset = 0;
for (int n = 0; n < cmd_lists_count; n++)
{
const ImDrawList* cmd_list = cmd_lists[n];
int vtx_offset = cmd_offset;
const ImDrawCmd* pcmd_end = cmd_list->commands.end();
for (const ImDrawCmd* pcmd = cmd_list->commands.begin(); pcmd != pcmd_end; pcmd++)
{
if (pcmd->user_callback)
{
pcmd->user_callback(cmd_list, pcmd);
}
else
{
glBindTexture(GL_TEXTURE_2D, (GLuint)(intptr_t)pcmd->texture_id);
glScissor((int)pcmd->clip_rect.x, (int)(height - pcmd->clip_rect.w), (int)(pcmd->clip_rect.z - pcmd->clip_rect.x), (int)(pcmd->clip_rect.w - pcmd->clip_rect.y));
glDrawArrays(GL_TRIANGLES, vtx_offset, pcmd->vtx_count);
}
vtx_offset += pcmd->vtx_count;
}
cmd_offset = vtx_offset;
}
// Restore modified state
glBindVertexArray(0);
glUseProgram(last_program);
glDisable(GL_SCISSOR_TEST);
glBindTexture(GL_TEXTURE_2D, last_texture);
}
void ParticlePainter::Render(unsigned int& renderIndex,GFX::FBOTexture* particleTarget, GFX::FBOTexture* depthBuffer,
GFX::FBOTexture* normalDepth, GFX::FBOTexture* specular, GFX::FBOTexture* glowMatID, GLuint toneMappedTexture,
const glm::mat4& viewMatrix, const glm::mat4& projectionMatrix, float gamma, RenderInfo& out_RenderInfo)
{
BasePainter::Render();
unsigned int numDrawCalls = 0;
unsigned int numTris = 0;
glBindFramebuffer(GL_FRAMEBUFFER, m_FBO);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, particleTarget->GetTextureHandle(), 0);
glDrawBuffer(GL_COLOR_ATTACHMENT0);
glClear(GL_COLOR_BUFFER_BIT);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_DEPTH_STENCIL_ATTACHMENT, GL_TEXTURE_2D, depthBuffer->GetTextureHandle(), 0);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT1, GL_TEXTURE_2D, glowMatID->GetTextureHandle(), 0);
GLenum particleDrawBuffers[] = { GL_NONE, GL_COLOR_ATTACHMENT0, GL_COLOR_ATTACHMENT1 };
glDrawBuffers(3, particleDrawBuffers);
glEnable(GL_DEPTH_TEST);
glDepthMask(GL_FALSE);
BasicCamera bc;
bc.viewMatrix = viewMatrix;
bc.projMatrix = projectionMatrix;
m_uniformBufferManager->SetBasicCameraUBO(bc);
std::vector<GFX::RenderJobManager::RenderJob> renderJobs = m_renderJobManager->GetJobs();
unsigned int currentShader = std::numeric_limits<decltype(currentShader)>::max();
unsigned int currentMesh = std::numeric_limits<decltype(currentMesh)>::max();
unsigned int currentMaterial = std::numeric_limits<decltype(currentMaterial)>::max();
unsigned int currentLayer = std::numeric_limits<decltype(currentLayer)>::max();
unsigned int currentTranslucency = std::numeric_limits<decltype(currentTranslucency)>::max();
unsigned int mesh = 0;
unsigned int material = 0;
unsigned int layer = 0;
unsigned int translucency = 0;
unsigned int objectType = 0;
const GFX::ParticleData* particleData;
GFX::GFXBitmask renderJob;
for(unsigned int i=0; renderIndex < renderJobs.size(); ++i, ++renderIndex)
{
renderJob = renderJobs[renderIndex].bitmask;
objectType = GFX::GetBitmaskValue(renderJob, GFX::BITMASK::TYPE);
if(objectType != GFX::OBJECT_TYPES::PARTICLE_GEOMETRY)
{
renderIndex--;
break;
}
layer = GetBitmaskValue(renderJob, GFX::BITMASK::LAYER);
translucency = GetBitmaskValue(renderJob, GFX::BITMASK::TRANSLUCENCY_TYPE);
mesh = GetBitmaskValue(renderJob, GFX::BITMASK::MESH_ID);
material = GetBitmaskValue(renderJob, GFX::BITMASK::MATERIAL_ID);
if(material != currentMaterial)
{
GFX::Material mat = m_materialManager->GetMaterial(material);
currentMaterial = material;
if(mat.shaderProgramID != currentShader)
{
currentShader = mat.shaderProgramID;
m_texture0Uniform = m_shaderManager->GetUniformLocation(currentShader, "gDiffuse");
m_texture1Uniform = m_shaderManager->GetUniformLocation(currentShader, "gNormal");
m_texture2Uniform = m_shaderManager->GetUniformLocation(currentShader, "gSpecular");
m_texture3Uniform = m_shaderManager->GetUniformLocation(currentShader, "gGlow");
m_depthBufferSizeUniform = m_shaderManager->GetUniformLocation(currentShader, "depthBufferSize");
m_depthBufferUniform = m_shaderManager->GetUniformLocation(currentShader, "gDepthBuffer");
m_gammaUniform = m_shaderManager->GetUniformLocation(currentShader, "gGamma");
}
glUseProgram(currentShader);
m_textureManager->BindTexture(m_textureManager->GetTexture(mat.textures[0]).textureHandle, m_texture0Uniform, 0, GL_TEXTURE_2D);
m_textureManager->BindTexture(m_textureManager->GetTexture(mat.textures[1]).textureHandle, m_texture1Uniform, 1, GL_TEXTURE_2D);
m_textureManager->BindTexture(m_textureManager->GetTexture(mat.textures[2]).textureHandle, m_texture2Uniform, 2, GL_TEXTURE_2D);
m_textureManager->BindTexture(m_textureManager->GetTexture(mat.textures[3]).textureHandle, m_texture3Uniform, 3, GL_TEXTURE_2D);
if(m_depthBufferUniform >= 0)
{
m_textureManager->BindTexture(normalDepth->GetTextureHandle(), m_depthBufferUniform, 4, GL_TEXTURE_2D);
}
if(m_depthBufferSizeUniform >= 0)
{
glUniform2fv(m_depthBufferSizeUniform, 1, &glm::vec2(normalDepth->GetWidth(), normalDepth->GetHeight())[0]);
}
if(m_gammaUniform >= 0)
{
glUniform1f(m_depthBufferSizeUniform, gamma);
}
}
if(mesh != currentMesh)
{
currentMesh = mesh;
particleData = m_particleManager->GetParticleData(currentMesh);
//TODO: Remove this check once the level heap is destroyed in a finalizer in the content manager
//This check is needed since the level heap is destroyed before calling render. The particle data is destroyed when the level heap is cleared.
if(particleData == nullptr)
{
continue;
}
glBindBuffer(GL_ARRAY_BUFFER, particleData->VBO);
glBindVertexArray(particleData->VAO);
}
if(translucency != currentTranslucency)
{
currentTranslucency = translucency;
switch (currentTranslucency)
{
case GFX::TRANSLUCENCY_TYPES::OPAQUE_TRANSLUCENCY:
{
glDisable(GL_BLEND);
glBlendEquation(GL_FUNC_ADD);
glBlendFunc(GL_ONE, GL_ZERO);
break;
}
case GFX::TRANSLUCENCY_TYPES::ADDITIVE_TRANSLUCENCY:
{
glEnable(GL_BLEND);
glBlendEquation(GL_FUNC_ADD);
glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
break;
}
case GFX::TRANSLUCENCY_TYPES::SUBTRACTIVE_TRANSLUCENCY:
{
glEnable(GL_BLEND);
glBlendEquation(GL_FUNC_SUBTRACT);
glBlendFunc(GL_SRC_ALPHA, GL_ONE);
break;
}
case GFX::TRANSLUCENCY_TYPES::MULTIPLICATIVE_TRANSLUCENCY:
{
glEnable(GL_BLEND);
glBlendEquation(GL_FUNC_ADD);
glBlendFunc(GL_DST_COLOR, GL_ZERO);
break;
}
}
}
if(layer != currentLayer)
{
currentLayer = layer;
switch (currentLayer)
{
case GFX::LAYER_TYPES::OUTLINE_LAYER:
{
glDisable(GL_DEPTH_TEST);
glStencilFunc(GL_NOTEQUAL, 1, -1);
glStencilOp(GL_KEEP, GL_KEEP, GL_REPLACE);
glLineWidth(m_outlineThickness);
glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
break;
}
case GFX::LAYER_TYPES::MESH_LAYER:
{
glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
glEnable(GL_DEPTH_TEST);
glDisable(GL_STENCIL_TEST);
break;
}
}
}
glDrawArrays(GL_POINTS, 0, particleData->particleCount);
numDrawCalls++;
numTris += 2 * particleData->particleCount;
}
glBindFramebuffer(GL_FRAMEBUFFER, m_FBO);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_DEPTH_STENCIL_ATTACHMENT, GL_TEXTURE_2D, depthBuffer->GetTextureHandle(), 0);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, normalDepth->GetTextureHandle(), 0);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT1, GL_TEXTURE_2D, toneMappedTexture, 0);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT2, GL_TEXTURE_2D, specular->GetTextureHandle(), 0);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT3, GL_TEXTURE_2D, glowMatID->GetTextureHandle(), 0);
GLenum drawBuffers[] = { GL_NONE, GL_COLOR_ATTACHMENT0, GL_COLOR_ATTACHMENT1, GL_COLOR_ATTACHMENT2, GL_COLOR_ATTACHMENT3 };
glDrawBuffers(5, drawBuffers);
glEnable(GL_BLEND);
glBlendEquation(GL_FUNC_ADD);
glBlendFunc(GL_SRC_ALPHA, GL_ONE);
m_shaderManager->UseProgram("ParticleApply");
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, particleTarget->GetTextureHandle());
glBindVertexArray(m_dummyVAO);
glDrawArrays(GL_POINTS, 0, 1);
glDisable(GL_BLEND);
glDepthMask(GL_TRUE);
out_RenderInfo.numDrawCalls = numDrawCalls;
out_RenderInfo.numTris = numTris;
}
void ImGuiRenderer::renderDrawList(ImDrawData *draw_data)
{
// Avoid rendering when minimized, scale coordinates for retina displays (screen coordinates != framebuffer coordinates)
ImGuiIO& io = ImGui::GetIO();
int fb_width = (int)(io.DisplaySize.x * io.DisplayFramebufferScale.x);
int fb_height = (int)(io.DisplaySize.y * io.DisplayFramebufferScale.y);
if (fb_width == 0 || fb_height == 0)
return;
draw_data->ScaleClipRects(io.DisplayFramebufferScale);
// Backup GL state
GLint last_active_texture; glGetIntegerv(GL_ACTIVE_TEXTURE, &last_active_texture);
glActiveTexture(GL_TEXTURE0);
GLint last_program; glGetIntegerv(GL_CURRENT_PROGRAM, &last_program);
GLint last_texture; glGetIntegerv(GL_TEXTURE_BINDING_2D, &last_texture);
GLint last_array_buffer; glGetIntegerv(GL_ARRAY_BUFFER_BINDING, &last_array_buffer);
GLint last_element_array_buffer; glGetIntegerv(GL_ELEMENT_ARRAY_BUFFER_BINDING, &last_element_array_buffer);
GLint last_vertex_array; glGetIntegerv(GL_VERTEX_ARRAY_BINDING, &last_vertex_array);
GLint last_blend_src_rgb; glGetIntegerv(GL_BLEND_SRC_RGB, &last_blend_src_rgb);
GLint last_blend_dst_rgb; glGetIntegerv(GL_BLEND_DST_RGB, &last_blend_dst_rgb);
GLint last_blend_src_alpha; glGetIntegerv(GL_BLEND_SRC_ALPHA, &last_blend_src_alpha);
GLint last_blend_dst_alpha; glGetIntegerv(GL_BLEND_DST_ALPHA, &last_blend_dst_alpha);
GLint last_blend_equation_rgb; glGetIntegerv(GL_BLEND_EQUATION_RGB, &last_blend_equation_rgb);
GLint last_blend_equation_alpha; glGetIntegerv(GL_BLEND_EQUATION_ALPHA, &last_blend_equation_alpha);
GLint last_viewport[4]; glGetIntegerv(GL_VIEWPORT, last_viewport);
GLint last_scissor_box[4]; glGetIntegerv(GL_SCISSOR_BOX, last_scissor_box);
GLboolean last_enable_blend = glIsEnabled(GL_BLEND);
GLboolean last_enable_cull_face = glIsEnabled(GL_CULL_FACE);
GLboolean last_enable_depth_test = glIsEnabled(GL_DEPTH_TEST);
GLboolean last_enable_scissor_test = glIsEnabled(GL_SCISSOR_TEST);
// Setup render state: alpha-blending enabled, no face culling, no depth testing, scissor enabled
glEnable(GL_BLEND);
glBlendEquation(GL_FUNC_ADD);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glDisable(GL_CULL_FACE);
glDisable(GL_DEPTH_TEST);
glEnable(GL_SCISSOR_TEST);
// Setup viewport, orthographic projection matrix
glViewport(0, 0, (GLsizei)fb_width, (GLsizei)fb_height);
//const float ortho_projection[4][4] =
ngl::Mat4 ortho_projection
(
2.0f/io.DisplaySize.x, 0.0f, 0.0f, 0.0f ,
0.0f, 2.0f/-io.DisplaySize.y, 0.0f, 0.0f ,
0.0f, 0.0f, -1.0f, 0.0f ,
-1.0f, 1.0f, 0.0f, 1.0f
);
ngl::ShaderLib *shader = ngl::ShaderLib::instance();
shader->use(ImGUIShader);
shader->setUniform("Texture",0);
shader->setUniform("ProjMtx",ortho_projection);
std::unique_ptr<ngl::AbstractVAO> vao;
vao=ngl::VAOFactory::createVAO(ngl::simpleIndexVAO,GL_TRIANGLES);
vao->bind();
for (int n = 0; n < draw_data->CmdListsCount; n++)
{
const ImDrawList* cmd_list = draw_data->CmdLists[n];
const ImDrawIdx* idx_buffer_offset = nullptr;
vao->setData(ngl::SimpleIndexVAO::VertexData(
cmd_list->VtxBuffer.Size * sizeof(ImDrawVert),
cmd_list->VtxBuffer.Data->pos.x,
(GLsizeiptr)cmd_list->IdxBuffer.Size * sizeof(ImDrawIdx),(const GLvoid*)cmd_list->IdxBuffer.Data,
sizeof(ImDrawIdx) == 2 ? GL_UNSIGNED_SHORT : GL_UNSIGNED_INT));
vao->setVertexAttributePointer(0,2,GL_FLOAT,sizeof(ImDrawVert), 0);
vao->setVertexAttributePointer(1,2,GL_FLOAT,sizeof(ImDrawVert), 2);
vao->setVertexAttributePointer(2,4,GL_UNSIGNED_BYTE,sizeof(ImDrawVert), 4,GL_TRUE);
vao->setNumIndices(cmd_list->IdxBuffer.Size);
for (int cmd_i = 0; cmd_i < cmd_list->CmdBuffer.Size; cmd_i++)
{
const ImDrawCmd* pcmd = &cmd_list->CmdBuffer[cmd_i];
if (pcmd->UserCallback)
{
pcmd->UserCallback(cmd_list, pcmd);
}
else
{
glBindTexture(GL_TEXTURE_2D, (GLuint)(intptr_t)pcmd->TextureId);
glScissor((int)pcmd->ClipRect.x, (int)(fb_height - pcmd->ClipRect.w), (int)(pcmd->ClipRect.z - pcmd->ClipRect.x), (int)(pcmd->ClipRect.w - pcmd->ClipRect.y));
// glDrawElements(GL_TRIANGLES, (GLsizei)pcmd->ElemCount, sizeof(ImDrawIdx) == 2 ? GL_UNSIGNED_SHORT : GL_UNSIGNED_INT, idx_buffer_offset);
vao->draw();
}
idx_buffer_offset += pcmd->ElemCount;
}
}
vao->unbind();
// Restore modified GL state
glUseProgram(last_program);
glBindTexture(GL_TEXTURE_2D, last_texture);
glActiveTexture(last_active_texture);
glBindVertexArray(last_vertex_array);
glBindBuffer(GL_ARRAY_BUFFER, last_array_buffer);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, last_element_array_buffer);
glBlendEquationSeparate(last_blend_equation_rgb, last_blend_equation_alpha);
glBlendFuncSeparate(last_blend_src_rgb, last_blend_dst_rgb, last_blend_src_alpha, last_blend_dst_alpha);
if (last_enable_blend) glEnable(GL_BLEND); else glDisable(GL_BLEND);
if (last_enable_cull_face) glEnable(GL_CULL_FACE); else glDisable(GL_CULL_FACE);
if (last_enable_depth_test) glEnable(GL_DEPTH_TEST); else glDisable(GL_DEPTH_TEST);
if (last_enable_scissor_test) glEnable(GL_SCISSOR_TEST); else glDisable(GL_SCISSOR_TEST);
glViewport(last_viewport[0], last_viewport[1], (GLsizei)last_viewport[2], (GLsizei)last_viewport[3]);
glScissor(last_scissor_box[0], last_scissor_box[1], (GLsizei)last_scissor_box[2], (GLsizei)last_scissor_box[3]);
}
void BlendEquationProtocol::onBlendEquationEnd(
const cocos2d::Mat4 &transform, uint32_t flags)
{
glBlendEquation(GL_FUNC_ADD);
}
void rglBlendEquation(GLenum mode)
{
glBlendEquation(mode);
}
// This is the main rendering function that you have to implement and provide to ImGui (via setting up 'RenderDrawListsFn' in the ImGuiIO structure)
// If text or lines are blurry when integrating ImGui in your engine:
// - in your Render function, try translating your projection matrix by (0.5f,0.5f) or (0.375f,0.375f)
void ImGui_ImplCinder_RenderDrawLists(ImDrawData* draw_data)
{
// Backup GL state
GLint last_program; glGetIntegerv(GL_CURRENT_PROGRAM, &last_program);
GLint last_texture; glGetIntegerv(GL_TEXTURE_BINDING_2D, &last_texture);
GLint last_array_buffer; glGetIntegerv(GL_ARRAY_BUFFER_BINDING, &last_array_buffer);
GLint last_element_array_buffer; glGetIntegerv(GL_ELEMENT_ARRAY_BUFFER_BINDING, &last_element_array_buffer);
GLint last_vertex_array; glGetIntegerv(GL_VERTEX_ARRAY_BINDING, &last_vertex_array);
GLint last_blend_src; glGetIntegerv(GL_BLEND_SRC, &last_blend_src);
GLint last_blend_dst; glGetIntegerv(GL_BLEND_DST, &last_blend_dst);
GLint last_blend_equation_rgb; glGetIntegerv(GL_BLEND_EQUATION_RGB, &last_blend_equation_rgb);
GLint last_blend_equation_alpha; glGetIntegerv(GL_BLEND_EQUATION_ALPHA, &last_blend_equation_alpha);
GLboolean last_enable_blend = glIsEnabled(GL_BLEND);
GLboolean last_enable_cull_face = glIsEnabled(GL_CULL_FACE);
GLboolean last_enable_depth_test = glIsEnabled(GL_DEPTH_TEST);
GLboolean last_enable_scissor_test = glIsEnabled(GL_SCISSOR_TEST);
// Setup render state: alpha-blending enabled, no face culling, no depth testing, scissor enabled
glEnable(GL_BLEND);
glBlendEquation(GL_FUNC_ADD);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glDisable(GL_CULL_FACE);
glDisable(GL_DEPTH_TEST);
glEnable(GL_SCISSOR_TEST);
glActiveTexture(GL_TEXTURE0);
// Handle cases of screen coordinates != from framebuffer coordinates (e.g. retina displays)
ImGuiIO& io = ImGui::GetIO();
float fb_height = io.DisplaySize.y * io.DisplayFramebufferScale.y;
draw_data->ScaleClipRects(io.DisplayFramebufferScale);
// Setup orthographic projection matrix
const float ortho_projection[4][4] =
{
{ 2.0f/io.DisplaySize.x, 0.0f, 0.0f, 0.0f },
{ 0.0f, 2.0f/-io.DisplaySize.y, 0.0f, 0.0f },
{ 0.0f, 0.0f, -1.0f, 0.0f },
{-1.0f, 1.0f, 0.0f, 1.0f },
};
glUseProgram(g_ShaderHandle);
glUniform1i(g_AttribLocationTex, 0);
glUniformMatrix4fv(g_AttribLocationProjMtx, 1, GL_FALSE, &ortho_projection[0][0]);
glBindVertexArray(g_VaoHandle);
for (int n = 0; n < draw_data->CmdListsCount; n++)
{
const ImDrawList* cmd_list = draw_data->CmdLists[n];
const ImDrawIdx* idx_buffer_offset = 0;
glBindBuffer(GL_ARRAY_BUFFER, g_VboHandle);
glBufferData(GL_ARRAY_BUFFER, (GLsizeiptr)cmd_list->VtxBuffer.size() * sizeof(ImDrawVert), (GLvoid*)&cmd_list->VtxBuffer.front(), GL_STREAM_DRAW);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, g_ElementsHandle);
glBufferData(GL_ELEMENT_ARRAY_BUFFER, (GLsizeiptr)cmd_list->IdxBuffer.size() * sizeof(ImDrawIdx), (GLvoid*)&cmd_list->IdxBuffer.front(), GL_STREAM_DRAW);
for (const ImDrawCmd* pcmd = cmd_list->CmdBuffer.begin(); pcmd != cmd_list->CmdBuffer.end(); pcmd++)
{
if (pcmd->UserCallback)
{
pcmd->UserCallback(cmd_list, pcmd);
}
else
{
glBindTexture(GL_TEXTURE_2D, (GLuint)(intptr_t)pcmd->TextureId);
glScissor((int)pcmd->ClipRect.x, (int)(fb_height - pcmd->ClipRect.w), (int)(pcmd->ClipRect.z - pcmd->ClipRect.x), (int)(pcmd->ClipRect.w - pcmd->ClipRect.y));
glDrawElements(GL_TRIANGLES, (GLsizei)pcmd->ElemCount, sizeof(ImDrawIdx) == 2 ? GL_UNSIGNED_SHORT : GL_UNSIGNED_INT, idx_buffer_offset);
}
idx_buffer_offset += pcmd->ElemCount;
}
}
// Restore modified GL state
glUseProgram(last_program);
glBindTexture(GL_TEXTURE_2D, last_texture);
glBindBuffer(GL_ARRAY_BUFFER, last_array_buffer);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, last_element_array_buffer);
glBindVertexArray(last_vertex_array);
glBlendEquationSeparate(last_blend_equation_rgb, last_blend_equation_alpha);
glBlendFunc(last_blend_src, last_blend_dst);
if (last_enable_blend) glEnable(GL_BLEND); else glDisable(GL_BLEND);
if (last_enable_cull_face) glEnable(GL_CULL_FACE); else glDisable(GL_CULL_FACE);
if (last_enable_depth_test) glEnable(GL_DEPTH_TEST); else glDisable(GL_DEPTH_TEST);
if (last_enable_scissor_test) glEnable(GL_SCISSOR_TEST); else glDisable(GL_SCISSOR_TEST);
}
void FSlateOpenGLRenderingPolicy::DrawElements( const FMatrix& ViewProjectionMatrix, const TArray<FSlateRenderBatch>& RenderBatches )
{
// Bind the vertex buffer. Each element uses the same buffer
VertexBuffer.Bind();
// Bind the shader program. Each element uses the same shader program
ElementProgram.BindProgram();
// Set the view projection matrix for the current viewport.
ElementProgram.SetViewProjectionMatrix( ViewProjectionMatrix );
// OpenGL state toggles
glDisable(GL_DEPTH_TEST);
glDisable(GL_CULL_FACE);
#if !PLATFORM_USES_ES2 && !PLATFORM_LINUX
glEnable(GL_TEXTURE_2D);
#endif
// Set up alpha testing
#if !PLATFORM_USES_ES2 && !PLATFORM_LINUX
glEnable(GL_ALPHA_TEST);
glAlphaFunc( GL_GREATER, 0.0f );
#endif
// Set up blending
glBlendFunc( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA );
glBlendEquation( GL_FUNC_ADD );
// Setup stencil
glStencilMask(0xFF);
glStencilFunc(GL_GREATER, 0, 0xFF);
glStencilOp(GL_KEEP, GL_INCR, GL_INCR);
for( int32 BatchIndex = 0; BatchIndex < RenderBatches.Num(); ++BatchIndex )
{
const FSlateRenderBatch& RenderBatch = RenderBatches[BatchIndex];
const FSlateShaderResource* Texture = RenderBatch.Texture;
const ESlateBatchDrawFlag::Type DrawFlags = RenderBatch.DrawFlags;
if( DrawFlags & ESlateBatchDrawFlag::NoBlending )
{
glDisable( GL_BLEND );
}
else
{
glEnable( GL_BLEND );
}
#if !PLATFORM_USES_ES2
if( DrawFlags & ESlateBatchDrawFlag::Wireframe )
{
glPolygonMode( GL_FRONT_AND_BACK, GL_LINE );
glDisable(GL_BLEND);
}
else
{
glPolygonMode( GL_FRONT_AND_BACK, GL_FILL );
}
#endif
ElementProgram.SetShaderType( RenderBatch.ShaderType );
ElementProgram.SetMarginUVs( RenderBatch.ShaderParams.PixelParams );
ElementProgram.SetDrawEffects( RenderBatch.DrawEffects );
// Disable stenciling and depth testing by default
glDisable(GL_STENCIL_TEST);
if( RenderBatch.ShaderType == ESlateShader::LineSegment )
{
// Test that the pixels in the line segment have only been drawn once
glEnable(GL_STENCIL_TEST);
}
else if( Texture )
{
uint32 RepeatU = DrawFlags & ESlateBatchDrawFlag::TileU ? GL_REPEAT : GL_CLAMP_TO_EDGE;
uint32 RepeatV = DrawFlags & ESlateBatchDrawFlag::TileV ? GL_REPEAT : GL_CLAMP_TO_EDGE;
#if PLATFORM_USES_ES2
if(!FMath::IsPowerOfTwo(Texture->GetWidth()) || !FMath::IsPowerOfTwo(Texture->GetHeight()))
{
RepeatU = GL_CLAMP_TO_EDGE;
RepeatV = GL_CLAMP_TO_EDGE;
}
#endif
ElementProgram.SetTexture( ((FSlateOpenGLTexture*)Texture)->GetTypedResource(), RepeatU, RepeatV );
}
else
{
ElementProgram.SetTexture( WhiteTexture->GetTypedResource(), GL_CLAMP_TO_EDGE, GL_CLAMP_TO_EDGE );
}
check( RenderBatch.NumIndices > 0 );
const uint32 IndexCount = RenderBatch.NumIndices;
uint32 Offset = 0;
// The offset into the vertex buffer where this batches vertices are located
uint32 BaseVertexIndex = RenderBatch.VertexOffset;
// The starting index in the index buffer for this element batch
uint32 StartIndex = RenderBatch.IndexOffset * sizeof(SlateIndex);
// Size of each vertex
const uint32 Stride = sizeof(FSlateVertex);
// Set up offsets into the vertex buffer for each vertex
glEnableVertexAttribArray(0);
Offset = STRUCT_OFFSET( FSlateVertex, TexCoords );
glVertexAttribPointer( 0, 4, GL_FLOAT, GL_FALSE, Stride, BUFFER_OFFSET(Stride*BaseVertexIndex+Offset) );
glEnableVertexAttribArray(1);
Offset = STRUCT_OFFSET( FSlateVertex, Position );
glVertexAttribPointer( 1, 2, GL_SHORT, GL_FALSE, Stride, BUFFER_OFFSET(Stride*BaseVertexIndex+Offset) );
bool bUseFloat16 =
#if SLATE_USE_FLOAT16
true;
#else
false;
#endif
glEnableVertexAttribArray(2);
Offset = STRUCT_OFFSET( FSlateVertex, ClipRect );
glVertexAttribPointer( 2, 2, bUseFloat16 ? GL_HALF_FLOAT : GL_FLOAT, GL_FALSE, Stride, BUFFER_OFFSET(Stride*BaseVertexIndex+Offset) );
glEnableVertexAttribArray(3);
Offset = STRUCT_OFFSET( FSlateVertex, ClipRect ) + STRUCT_OFFSET( FSlateRotatedClipRectType, ExtentX );
glVertexAttribPointer( 3, 4, bUseFloat16 ? GL_HALF_FLOAT : GL_FLOAT, GL_FALSE, Stride, BUFFER_OFFSET(Stride*BaseVertexIndex+Offset) );
glEnableVertexAttribArray(4);
Offset = STRUCT_OFFSET( FSlateVertex, Color );
glVertexAttribPointer( 4, 4, GL_UNSIGNED_BYTE, GL_TRUE, Stride, BUFFER_OFFSET(Stride*BaseVertexIndex+Offset) );
// Bind the index buffer so glDrawRangeElements knows which one to use
IndexBuffer.Bind();
#if SLATE_USE_32BIT_INDICES
#define GL_INDEX_FORMAT GL_UNSIGNED_INT
#else
#define GL_INDEX_FORMAT GL_UNSIGNED_SHORT
#endif
#if PLATFORM_USES_ES2
glDrawElements(GetOpenGLPrimitiveType(RenderBatch.DrawPrimitiveType), RenderBatch.NumIndices, GL_INDEX_FORMAT, (void*)StartIndex);
#else
// Draw all elements in batch
glDrawRangeElements( GetOpenGLPrimitiveType(RenderBatch.DrawPrimitiveType), 0, RenderBatch.NumVertices, RenderBatch.NumIndices, GL_INDEX_FORMAT, (void*)(PTRINT)StartIndex );
#endif
CHECK_GL_ERRORS;
}
// Disable active textures and shaders
glActiveTexture( GL_TEXTURE0 );
glBindTexture( GL_TEXTURE_2D, 0 );
glUseProgram(0);
}
void Splatterer::splat( GLuint count,
const BufferTexture* positions,
const BufferTexture* directions,
const BufferTexture* speeds,
const BufferTexture* ids,
const BufferTexture* radii )
{
glBindBuffer(GL_ARRAY_BUFFER, pointBuffer);
GL_ERROR;
glVertexAttribPointer(splatAttribVertex, 4, GL_FLOAT, GL_FALSE, 0, NULL);
GL_ERROR;
glEnableVertexAttribArray(splatAttribVertex);
GL_ERROR;
glBlendFunc(GL_ONE, GL_ONE);
glBlendEquation(GL_FUNC_ADD);
glEnable(GL_BLEND);
GL_ERROR;
glActiveTexture(GL_TEXTURE0);
GL_ERROR;
positions->enable();
glActiveTexture(GL_TEXTURE1);
GL_ERROR;
directions->enable();
glActiveTexture(GL_TEXTURE2);
GL_ERROR;
speeds->enable();
glActiveTexture(GL_TEXTURE3);
GL_ERROR;
ids->enable();
glActiveTexture(GL_TEXTURE4);
GL_ERROR;
radii->enable();
glActiveTexture(GL_TEXTURE5);
GL_ERROR;
agent->enable();
// Draw discomfort brush
discomfortProgram->enable();
glDrawArraysInstanced(GL_POINTS, 0, 1, 1);
GL_ERROR;
// Draw agent splats
splatProgram->enable();
glDrawArraysInstanced(GL_POINTS, 0, 1, count);
GL_ERROR;
glDisable(GL_BLEND);
GL_ERROR;
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0);
GL_ERROR;
glDisableVertexAttribArray(splatAttribVertex);
GL_ERROR;
glBindTexture(GL_TEXTURE_BUFFER, 0);
}
int main(int argc, char* argv[]) {
printf("Creating OpenGL context...\n");
sf::ContextSettings settings;
settings.antialiasingLevel = 8;
settings.majorVersion = 3;
settings.minorVersion = 2;
sf::RenderWindow window(sf::VideoMode(WINDOW_WIDTH, WINDOW_HEIGHT), "DSC Demo", sf::Style::Default, settings);
printf("Initializing OpenGL...\n");
glewExperimental = GL_TRUE;
glewInit();
printf("VENDOR = %s\n", glGetString(GL_VENDOR));
printf("RENDERER = %s\n", glGetString(GL_RENDERER));
printf("VERSION = %s\n", glGetString(GL_VERSION));
GLuint vao;
glGenVertexArrays(1, &vao);
glDisable(GL_CULL_FACE);
glDisable(GL_DEPTH_TEST);
glEnable(GL_BLEND);
glDepthFunc(GL_LESS);
glBlendEquation(GL_FUNC_ADD);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
// Load/generate tet mesh based on command line argument:
TetMesh * tet_mesh;
printf("Generating tet mesh...\n");
/*
* 1: Sphere
* 2: Debug tetmesh
* 3: Big debug tetmesh
* 4: Collapsed tetmesh
* 5: Sphere, rotated
* 6: C-mesh, joining together
* 7: Sphere, stretched in the x-direction
*/
std::string meshArg = "1";
if (argc >= 2) { meshArg = argv[1]; }
if (meshArg == "2") { // Debug tetmesh
tet_mesh = TetMeshFactory::create_debug_tetmesh();
printf("Evolving tet mesh ...\n");
tet_mesh->evolve();
} else if (meshArg == "3") { // Big debug tetmesh
tet_mesh = TetMeshFactory::create_big_debug_tetmesh();
printf("Evolving tet mesh ...\n");
tet_mesh->evolve();
} else if (meshArg == "4") { // Collapsed tetmesh
tet_mesh = TetMeshFactory::create_collapsed_tetmesh();
printf("Evolving tet mesh ...\n");
tet_mesh->evolve();
} else if (meshArg == "5") { // Rotated sphere tetmesh
IndexedFaceSet * mesh = IndexedFaceSet::load_from_obj("assets/models/sphere.obj");
tet_mesh = TetMeshFactory::from_indexed_face_set(*mesh);
delete mesh;
for (int deg = 1; deg <= 57; deg++) {
REAL angle = PI / 180;
for (unsigned int i = 0; i < tet_mesh->vertices.size() / 3; i++) {
if (tet_mesh->get_vertex_status(i) == INTERFACE) {
glm::detail::tvec4<REAL, glm::precision::defaultp> v(tet_mesh->vertices[i*3], tet_mesh->vertices[i*3+1], tet_mesh->vertices[i*3+2], 1);
glm::detail::tvec4<REAL, glm::precision::defaultp> v2 = glm::rotateX(v, angle);
tet_mesh->vertex_targets[i*3] = v2[0];
tet_mesh->vertex_targets[i*3+1] = v2[1];
tet_mesh->vertex_targets[i*3+2] = v2[2];
tet_mesh->vertex_statuses[i] = MOVING;
}
}
printf("Evolving tet mesh (%d deg)...\n", deg);
tet_mesh->evolve();
}
} else if (meshArg == "6") { // C-mesh
IndexedFaceSet * mesh = IndexedFaceSet::load_from_obj("assets/models/c_mesh.obj");
tet_mesh = TetMeshFactory::from_indexed_face_set(*mesh);
delete mesh;
for (unsigned int i = 0; i < tet_mesh->vertices.size() / 3; i++) {
if (tet_mesh->get_vertex_status(i) == INTERFACE)
{
glm::detail::tvec4<REAL, glm::precision::defaultp> v(tet_mesh->vertices[i*3], tet_mesh->vertices[i*3+1], tet_mesh->vertices[i*3+2], 1);
if (tet_mesh->vertices[i*3] == 0.64f && tet_mesh->vertices[i*3+1] == 0.10f)
{
tet_mesh->vertex_targets[i*3] = tet_mesh->vertices[i*3]; // Stays the same
tet_mesh->vertex_targets[i*3+1] = -0.10f; // Moves to create C Mesh case
tet_mesh->vertex_targets[i*3+2] = tet_mesh->vertices[i*3+2]; // Stays the same
}
else
{
tet_mesh->vertex_targets[i*3] = tet_mesh->vertices[i*3];
tet_mesh->vertex_targets[i*3+1] = tet_mesh->vertices[i*3+1];
tet_mesh->vertex_targets[i*3+2] = tet_mesh->vertices[i*3+2];
}
tet_mesh->vertex_statuses[i] = MOVING;
}
}
printf("Evolving tet mesh from C mesh...\n");
tet_mesh->evolve();
} else if (meshArg == "7") { // Stretched sphere
IndexedFaceSet * mesh = IndexedFaceSet::load_from_obj("assets/models/sphere.obj");
tet_mesh = TetMeshFactory::from_indexed_face_set(*mesh);
for (unsigned int i = 0; i < tet_mesh->vertices.size() / 3; i++) {
if (tet_mesh->get_vertex_status(i) == INTERFACE) {
// scale x
tet_mesh->vertex_targets[i * 3] = tet_mesh->vertices[i * 3] * 1.2;
tet_mesh->vertex_targets[i * 3 + 1] = tet_mesh->vertices[i * 3 + 1];
tet_mesh->vertex_targets[i * 3 + 2] = tet_mesh->vertices[i * 3 + 2];
tet_mesh->vertex_statuses[i] = MOVING;
}
}
printf("Evolving tet mesh ...\n");
tet_mesh->evolve();
} else { // Default case (tet mesh #1)
IndexedFaceSet * mesh = IndexedFaceSet::load_from_obj("assets/models/sphere.obj");
tet_mesh = TetMeshFactory::from_indexed_face_set(*mesh);
printf("Evolving tet mesh ...\n");
tet_mesh->evolve();
delete mesh;
}
printf("Displaying tet mesh...\n");
printf("Initializing display...\n");
Shader * shader = Shader::compile_from("shaders/dsc.vsh", "shaders/dsc.gsh", "shaders/dsc.fsh");
glUseProgram(shader->get_id());
glBindVertexArray(vao);
Renderable renderable(shader, true, false, GL_TRIANGLES);
tgui::Gui gui(window);
gui.setGlobalFont("assets/fonts/DejaVuSans.ttf");
TetrahedralViewer viewer(&renderable, &gui);
viewer.init(WINDOW_WIDTH, WINDOW_HEIGHT, FOV);
viewer.bind_attributes(*tet_mesh, renderable);
check_gl_error();
delete tet_mesh;
printf("Starting display...\n");
sf::Event event;
sf::Clock clock;
tgui::Callback callback;
while (window.isOpen()) {
// float frame_length = clock.restart().asSeconds();
glUseProgram(shader->get_id());
glBindVertexArray(vao);
while (gui.pollCallback(callback)) {
viewer.handle_callback(callback);
}
viewer.update();
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
renderable.render();
check_gl_error();
glUseProgram(0);
glBindVertexArray(0);
gui.draw();
window.display();
while (window.pollEvent(event)) {
if (event.type == sf::Event::Closed) {
printf("Closing window...\n");
window.close();
}
viewer.handle_event(event);
}
sf::sleep(sf::seconds(1.0f / FRAME_RATE));
}
printf("Cleaning up...\n");
delete shader;
return 0;
}
void blendMode::set() {
glEnable( GL_BLEND_ADVANCED_COHERENT_NV );
glBlendEquation( bm );
}
void renderer_bind_light(struct renderer *r)
{
GLuint prog;
prog = r->light.prog;
glDrawBuffer(GL_COLOR_ATTACHMENT0 + NUM_FRAMEBUFFER_ATTACHMENTS);
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, r->fb.fba[POSITION_ATTACHMENT]);
glActiveTexture(GL_TEXTURE1);
glBindTexture(GL_TEXTURE_2D, r->fb.fba[COLOR_ATTACHMENT]);
glActiveTexture(GL_TEXTURE2);
glBindTexture(GL_TEXTURE_2D, r->fb.fba[NORMAL_ATTACHMENT]);
glActiveTexture(GL_TEXTURE3);
glBindTexture(GL_TEXTURE_2D, r->fb.fba[TEXCOORD_ATTACHMENT]);
glActiveTexture(GL_TEXTURE4);
glBindTexture(GL_TEXTURE_2D, r->fb.fba[VELOCITY_ATTACHMENT]);
glStencilFunc(GL_NOTEQUAL, 0, 0xFF);
glDisable(GL_DEPTH_TEST);
glEnable(GL_BLEND);
glBlendEquation(GL_FUNC_ADD);
glBlendFunc(GL_ONE, GL_ONE);
glEnable(GL_CULL_FACE);
glCullFace(GL_FRONT);
glUseProgram(prog);
glUniform1i(
glGetUniformLocation(prog, "PositionMap"),
0
);
glUniform1i(
glGetUniformLocation(prog, "ColorMap"),
1
);
glUniform1i(
glGetUniformLocation(prog, "NormalMap"),
2
);
glUniform1i(
glGetUniformLocation(prog, "TexcoordMap"),
3
);
glUniform1i(
glGetUniformLocation(prog, "VelocityMap"),
4
);
glUniformMatrix4fv(
glGetUniformLocation(prog, "ModelViewProjectionMatrix"),
1,
GL_FALSE,
r->mvp.a
);
glUniform2f(
glGetUniformLocation(prog, "ScreenDimensions"),
r->width,
r->height
);
glUniform3fv(
glGetUniformLocation(prog, "EyePosition"),
1,
&r->pos.x
);
glBindBuffer(GL_ARRAY_BUFFER, r->cube_attr);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, r->cube_idx);
glEnableVertexAttribArray(0);
glVertexAttribPointer(
0,
3,
GL_FLOAT,
GL_FALSE,
sizeof(struct attribs),
0
);
}
// OpenGL3 Render function.
// (this used to be set in io.RenderDrawListsFn and called by ImGui::Render(), but you can now call this directly from your main loop)
// Note that this implementation is little overcomplicated because we are saving/setting up/restoring every OpenGL state explicitly, in order to be able to run within any OpenGL engine that doesn't do so.
void ImGui_ImplGlfwGL3_RenderDrawData(ImDrawData* draw_data)
{
// Avoid rendering when minimized, scale coordinates for retina displays (screen coordinates != framebuffer coordinates)
ImGuiIO& io = ImGui::GetIO();
int fb_width = (int)(io.DisplaySize.x * io.DisplayFramebufferScale.x);
int fb_height = (int)(io.DisplaySize.y * io.DisplayFramebufferScale.y);
if (fb_width == 0 || fb_height == 0)
return;
draw_data->ScaleClipRects(io.DisplayFramebufferScale);
// Backup GL state
GLenum last_active_texture; glGetIntegerv(GL_ACTIVE_TEXTURE, (GLint*)&last_active_texture);
glActiveTexture(GL_TEXTURE0);
GLint last_program; glGetIntegerv(GL_CURRENT_PROGRAM, &last_program);
GLint last_texture; glGetIntegerv(GL_TEXTURE_BINDING_2D, &last_texture);
GLint last_sampler; glGetIntegerv(GL_SAMPLER_BINDING, &last_sampler);
GLint last_array_buffer; glGetIntegerv(GL_ARRAY_BUFFER_BINDING, &last_array_buffer);
GLint last_element_array_buffer; glGetIntegerv(GL_ELEMENT_ARRAY_BUFFER_BINDING, &last_element_array_buffer);
GLint last_vertex_array; glGetIntegerv(GL_VERTEX_ARRAY_BINDING, &last_vertex_array);
GLint last_polygon_mode[2]; glGetIntegerv(GL_POLYGON_MODE, last_polygon_mode);
GLint last_viewport[4]; glGetIntegerv(GL_VIEWPORT, last_viewport);
GLint last_scissor_box[4]; glGetIntegerv(GL_SCISSOR_BOX, last_scissor_box);
GLenum last_blend_src_rgb; glGetIntegerv(GL_BLEND_SRC_RGB, (GLint*)&last_blend_src_rgb);
GLenum last_blend_dst_rgb; glGetIntegerv(GL_BLEND_DST_RGB, (GLint*)&last_blend_dst_rgb);
GLenum last_blend_src_alpha; glGetIntegerv(GL_BLEND_SRC_ALPHA, (GLint*)&last_blend_src_alpha);
GLenum last_blend_dst_alpha; glGetIntegerv(GL_BLEND_DST_ALPHA, (GLint*)&last_blend_dst_alpha);
GLenum last_blend_equation_rgb; glGetIntegerv(GL_BLEND_EQUATION_RGB, (GLint*)&last_blend_equation_rgb);
GLenum last_blend_equation_alpha; glGetIntegerv(GL_BLEND_EQUATION_ALPHA, (GLint*)&last_blend_equation_alpha);
GLboolean last_enable_blend = glIsEnabled(GL_BLEND);
GLboolean last_enable_cull_face = glIsEnabled(GL_CULL_FACE);
GLboolean last_enable_depth_test = glIsEnabled(GL_DEPTH_TEST);
GLboolean last_enable_scissor_test = glIsEnabled(GL_SCISSOR_TEST);
// Setup render state: alpha-blending enabled, no face culling, no depth testing, scissor enabled, polygon fill
glEnable(GL_BLEND);
glBlendEquation(GL_FUNC_ADD);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glDisable(GL_CULL_FACE);
glDisable(GL_DEPTH_TEST);
glEnable(GL_SCISSOR_TEST);
glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
// Setup viewport, orthographic projection matrix
glViewport(0, 0, (GLsizei)fb_width, (GLsizei)fb_height);
const float ortho_projection[4][4] =
{
{ 2.0f/io.DisplaySize.x, 0.0f, 0.0f, 0.0f },
{ 0.0f, 2.0f/-io.DisplaySize.y, 0.0f, 0.0f },
{ 0.0f, 0.0f, -1.0f, 0.0f },
{-1.0f, 1.0f, 0.0f, 1.0f },
};
glUseProgram(g_ShaderHandle);
glUniform1i(g_AttribLocationTex, 0);
glUniformMatrix4fv(g_AttribLocationProjMtx, 1, GL_FALSE, &ortho_projection[0][0]);
glBindSampler(0, 0); // Rely on combined texture/sampler state.
// Recreate the VAO every time
// (This is to easily allow multiple GL contexts. VAO are not shared among GL contexts, and we don't track creation/deletion of windows so we don't have an obvious key to use to cache them.)
GLuint vao_handle = 0;
glGenVertexArrays(1, &vao_handle);
glBindVertexArray(vao_handle);
glBindBuffer(GL_ARRAY_BUFFER, g_VboHandle);
glEnableVertexAttribArray(g_AttribLocationPosition);
glEnableVertexAttribArray(g_AttribLocationUV);
glEnableVertexAttribArray(g_AttribLocationColor);
glVertexAttribPointer(g_AttribLocationPosition, 2, GL_FLOAT, GL_FALSE, sizeof(ImDrawVert), (GLvoid*)IM_OFFSETOF(ImDrawVert, pos));
glVertexAttribPointer(g_AttribLocationUV, 2, GL_FLOAT, GL_FALSE, sizeof(ImDrawVert), (GLvoid*)IM_OFFSETOF(ImDrawVert, uv));
glVertexAttribPointer(g_AttribLocationColor, 4, GL_UNSIGNED_BYTE, GL_TRUE, sizeof(ImDrawVert), (GLvoid*)IM_OFFSETOF(ImDrawVert, col));
// Draw
for (int n = 0; n < draw_data->CmdListsCount; n++)
{
const ImDrawList* cmd_list = draw_data->CmdLists[n];
const ImDrawIdx* idx_buffer_offset = 0;
glBindBuffer(GL_ARRAY_BUFFER, g_VboHandle);
glBufferData(GL_ARRAY_BUFFER, (GLsizeiptr)cmd_list->VtxBuffer.Size * sizeof(ImDrawVert), (const GLvoid*)cmd_list->VtxBuffer.Data, GL_STREAM_DRAW);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, g_ElementsHandle);
glBufferData(GL_ELEMENT_ARRAY_BUFFER, (GLsizeiptr)cmd_list->IdxBuffer.Size * sizeof(ImDrawIdx), (const GLvoid*)cmd_list->IdxBuffer.Data, GL_STREAM_DRAW);
for (int cmd_i = 0; cmd_i < cmd_list->CmdBuffer.Size; cmd_i++)
{
const ImDrawCmd* pcmd = &cmd_list->CmdBuffer[cmd_i];
if (pcmd->UserCallback)
{
pcmd->UserCallback(cmd_list, pcmd);
}
else
{
glBindTexture(GL_TEXTURE_2D, (GLuint)(intptr_t)pcmd->TextureId);
glScissor((int)pcmd->ClipRect.x, (int)(fb_height - pcmd->ClipRect.w), (int)(pcmd->ClipRect.z - pcmd->ClipRect.x), (int)(pcmd->ClipRect.w - pcmd->ClipRect.y));
glDrawElements(GL_TRIANGLES, (GLsizei)pcmd->ElemCount, sizeof(ImDrawIdx) == 2 ? GL_UNSIGNED_SHORT : GL_UNSIGNED_INT, idx_buffer_offset);
}
idx_buffer_offset += pcmd->ElemCount;
}
}
glDeleteVertexArrays(1, &vao_handle);
// Restore modified GL state
glUseProgram(last_program);
glBindTexture(GL_TEXTURE_2D, last_texture);
glBindSampler(0, last_sampler);
glActiveTexture(last_active_texture);
glBindVertexArray(last_vertex_array);
glBindBuffer(GL_ARRAY_BUFFER, last_array_buffer);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, last_element_array_buffer);
glBlendEquationSeparate(last_blend_equation_rgb, last_blend_equation_alpha);
glBlendFuncSeparate(last_blend_src_rgb, last_blend_dst_rgb, last_blend_src_alpha, last_blend_dst_alpha);
if (last_enable_blend) glEnable(GL_BLEND); else glDisable(GL_BLEND);
if (last_enable_cull_face) glEnable(GL_CULL_FACE); else glDisable(GL_CULL_FACE);
if (last_enable_depth_test) glEnable(GL_DEPTH_TEST); else glDisable(GL_DEPTH_TEST);
if (last_enable_scissor_test) glEnable(GL_SCISSOR_TEST); else glDisable(GL_SCISSOR_TEST);
glPolygonMode(GL_FRONT_AND_BACK, (GLenum)last_polygon_mode[0]);
glViewport(last_viewport[0], last_viewport[1], (GLsizei)last_viewport[2], (GLsizei)last_viewport[3]);
glScissor(last_scissor_box[0], last_scissor_box[1], (GLsizei)last_scissor_box[2], (GLsizei)last_scissor_box[3]);
}
void Particles::update(int w, int h){
if(w!=lastw||h!=lasth){
initFbo(w, h);
}
glBlendEquation(GL_ADD);
glBlendFunc(GL_ONE, GL_ZERO);
for(int i = 0 ; i < forces.size();i++){
if(forces[i]->isActive&&forces[i]->name.find("net")!=string::npos){
velPingPong.dst->begin();
forces[i]->shader.begin();
forces[i]->shader.setUniformTexture("posData",posPingPong.src->getTextureReference(), 1);
forces[i]->shader.setUniform3f("screen",w,h,dad->zdepth);
forces[i]->shader.setUniform1i("resolution",textureRes);
forces[i]->updateShader();
velPingPong.src->draw(0,0);
forces[i]->shader.end();
velPingPong.dst->end();
velPingPong.swap();
// }
}
else if(forces[i]->isActive ){
int j = 0;
vector<ofPoint> curattr = dad->attr->getType(forces[i]->attrFamilly,1,1,forces[i]->attrZone);
if(map2blob){
// drawBlob * vvv = (drawBlob *)dad->get("drawBlob");
// for(int i = 0 ; i< curattr.size();i++){
// if(vvv->invertx)curattr[i].x = 1-curattr[i].x;
// if(vvv->inverty)curattr[i].y = 1-curattr[i].y;
//
// }
// dad->sH.mapN2S(curattr,vvv->screenN);
}
if((forces[i]->attrFamilly>-2?curattr.size()>0:1)){
do{
velPingPong.dst->begin();
forces[i]->shader.begin();
forces[i]->shader.setUniformTexture("posData",posPingPong.src->getTextureReference(), 1);
if(forces[i]->name=="origin")
forces[i]->shader.setUniformTexture("originData",origins.getTextureReference(), 2);
if(forces[i]->name=="fieldForce"){
forces[i]->shader.setUniform2f("inres",dad->inw,dad->inh);
#ifdef syphon
forces[i]->shader.setUniformTexture("fieldData",dad->pipePP.src->getTextureReference(), 2);
#endif
}
if(forces[i]->attrFamilly>=0&&curattr.size()>0&&j<curattr.size()){
forces[i]->shader.setUniform3f("attr",curattr[j].x,curattr[j].y,curattr[j].z+0.5);
}
forces[i]->shader.setUniform3f("screen",w,h,dad->zdepth);
if(origintype==1)forces[i]->shader.setUniform1i("resolution",textureRes3);
else forces[i]->shader.setUniform1i("resolution",textureRes);
forces[i]->updateShader();
velPingPong.src->draw(0,0);
forces[i]->shader.end();
velPingPong.dst->end();
velPingPong.swap();
j++;
}while( forces[i]->attrFamilly>=0&&j<curattr.size());
}
}
// glEnd();
}
posPingPong.dst->begin();
updatePos.begin(); // Previus position
updatePos.setUniformTexture("velData", velPingPong.src->getTextureReference(), 1); // Velocity
updatePos.setUniform1f("timestep",timeStep*1.0/FPS );
updatePos.setUniform1i("resolution",textureRes);
posPingPong.src->draw(0,0);
updatePos.end();
posPingPong.dst->end();
posPingPong.swap();
lastw = w;
lasth = h;
}
// ----------------------------------------------------------------------------
SPShaderManager::SPShaderManager()
{
#ifndef SERVER_ONLY
m_official_sampler_types =
{
{ "nearest", ST_NEAREST },
{ "nearest_clamped", ST_NEAREST_CLAMPED },
{ "bilinear", ST_BILINEAR },
{ "bilinear_clamped", ST_BILINEAR_CLAMPED },
{ "trilinear", ST_TRILINEAR },
{ "trilinear_clamped", ST_TRILINEAR_CLAMPED },
{ "semi_trilinear", ST_SEMI_TRILINEAR }
};
m_official_uniform_assigner_functions =
{
{ "shadowCascadeUniformAssigner", [](SPUniformAssigner* ua)
{
ua->setValue(sp_cur_shadow_cascade);
}
},
{ "windDirectionUniformAssigner", [](SPUniformAssigner* ua)
{
ua->setValue(sp_wind_dir);
}
},
{ "isDuringDayUniformAssigner", [](SPUniformAssigner* ua)
{
int is_during_day = Track::getCurrentTrack() ?
Track::getCurrentTrack()->getIsDuringDay() ? 1 : 0 : 0;
ua->setValue(is_during_day);
}
},
{ "zeroAlphaUniformAssigner", [](SPUniformAssigner* ua)
{
ua->setValue(0.0f);
}
},
{ "fogUniformAssigner", [](SPUniformAssigner* ua)
{
int fog_enable = Track::getCurrentTrack() ?
Track::getCurrentTrack()->isFogEnabled() ? 1 : 0 : 0;
ua->setValue(fog_enable);
}
},
{ "ghostAlphaUniformAssigner", [](SPUniformAssigner* ua)
{
float alpha = 1.0f;
if (Track::getCurrentTrack())
{
const video::SColor& c = Track::getCurrentTrack()
->getSunColor();
float y = 0.2126f * c.getRed() + 0.7152f * c.getGreen() +
0.0722f * c.getBlue();
alpha = y > 128.0f ? 0.5f : 0.35f;
}
ua->setValue(alpha);
}
}
};
m_official_use_functions =
{
{ "alphaBlendUse", []()
{
glEnable(GL_DEPTH_TEST);
glDepthMask(GL_FALSE);
glDisable(GL_CULL_FACE);
glEnable(GL_BLEND);
glBlendEquation(GL_FUNC_ADD);
glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
}
},
{ "additiveUse", []()
{
glEnable(GL_DEPTH_TEST);
glDepthMask(GL_FALSE);
glDisable(GL_CULL_FACE);
glEnable(GL_BLEND);
glBlendEquation(GL_FUNC_ADD);
glBlendFunc(GL_ONE, GL_ONE);
}
},
{ "ghostUse", []()
{
glEnable(GL_DEPTH_TEST);
glDepthMask(GL_TRUE);
glEnable(GL_CULL_FACE);
glEnable(GL_BLEND);
glBlendEquation(GL_FUNC_ADD);
glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
}
}
};
#endif
} // SPShaderManager
void GLWidget::initializeGL()
{
#ifndef __APPLE__
glewExperimental = GL_TRUE;
GLenum err = glewInit();
if (GLEW_OK != err)
qDebug() << glewGetErrorString(err);
#endif
glClearColor(0.0, 0.0, 0.0, 0.0);
glEnable(GL_BLEND);
glBlendEquation(GL_FUNC_ADD);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glEnable(GL_CULL_FACE);
glCullFace(GL_FRONT);
glDisable(GL_DEPTH_TEST);
glColorMask(true, true, true, true);
glDepthMask(true);
// initialize transformation
rotation = Mat3f::identity();
translation = Vec3f(0.0f, 0.0f, -2.0f);
// load sample data volume
//volumeDim.x = 256;
//volumeDim.y = 256;
//volumeDim.z = 178;
int volumeSize = volumeDim.x * volumeDim.y * volumeDim.z;
std::vector<unsigned char> volumeData;
// std::vector<float> volumeData;
volumeData.resize(volumeSize);
std::ifstream ifs(datasetName.toStdString(), std::ios::binary);
if(!ifs.is_open())
{
qDebug() << "Failed to open sample volume!";
close();
}
ifs.read(reinterpret_cast<char *>(&volumeData.front()), volumeSize * sizeof(unsigned char));
ifs.close();
// prepare transfer function data
tfdata.clear();
for(int i = 0; i< 512; i++)
{
if(i < 64)
tfdata.push_back(Vec4f(1.0f, 0.0f, 0.0f, 0.0f));
else if(i<128)
tfdata.push_back(Vec4f(1.0f, 1.0f, 0.0f, 0.001f*i));
else if(i<196)
tfdata.push_back(Vec4f(0.0f, 1.0f, 0.0f, 0.001f*i));
else if(i<312)
tfdata.push_back(Vec4f(0.2f, 1.0f, 1.0f, 0.0001f*i));
else if(i<400)
tfdata.push_back(Vec4f(0.1f, 0.3f, 1.0f, 0.0001f*i));
else
tfdata.push_back(Vec4f(1.0f, 0.0f, 1.0f, 0.0002f*i));
}
std::vector<unsigned char> volumeDataTest;
volumeDataTest.resize(volumeSize);
for(int i = 0; i < 5; i++)
for(int j = 0; j < 5; j++)
for(int k = 0; k < 5; k++)
{
if( i==2 && j ==2 && k==2)
volumeDataTest[i+5*j+k*25] = 255;
else
volumeDataTest[i+5*j+k*25] = 0;
}
// create OpenGL textures
volumeTex = GLTexture::create();
volumeTex->updateTexImage3D(GL_R8, volumeDim, GL_RED, GL_UNSIGNED_BYTE, &volumeData.front());
// create OpenGL textures for tricubic interpolation
// volumeTexTriCubic = GLTexture::create();
// volumeTexTriCubic->updateTexImage3DNoInterpolation(GL_R8, volumeDim, GL_RED, GL_UNSIGNED_BYTE, &volumeData.front());
transferFuncTex = GLTexture::create();
transferFuncTex->updateTexImage2D(GL_RGBA32F, Vec2i(int(tfdata.size()), 1), GL_RGBA, GL_FLOAT, &tfdata.front());
// create full screen rectangle for volume ray-casting
std::vector<Vec2f> rectVertices;
rectVertices.push_back(Vec2f(0.0f, 0.0f));
rectVertices.push_back(Vec2f(0.0f, 1.0f));
rectVertices.push_back(Vec2f(1.0f, 1.0f));
rectVertices.push_back(Vec2f(1.0f, 0.0f));
rectVertexBuffer = GLArrayBuffer::create(GL_ARRAY_BUFFER);
rectVertexBuffer->update(rectVertices.size() * sizeof(Vec2f), &rectVertices.front(), GL_STATIC_DRAW);
rectVertexArray = GLVertexArray::create();
// create OpenGL shaders
volumeRayCastingProgram = GLShaderProgram::create("VolumeRayCasting.vert", "VolumeRayCasting.frag");
if(volumeRayCastingProgram == NULL)
close();
// assign vertex buffer to the shader attribute input called "Vertex"
volumeRayCastingProgram->setVertexAttribute("Vertex", rectVertexArray, rectVertexBuffer, 2, GL_FLOAT, false);
//Pre-integration
preIntTex = GLTexture::create();
preIntTex->updateTexImage2D(GL_RGBA32F, Vec2i(int(tfdata.size()), int(tfdata.size())), GL_RGBA, GL_FLOAT, &tfdata.front());
preIntFBO = GLFramebuffer::create();
preIntFBO->bind();
colAtt = GL_COLOR_ATTACHMENT0;
glDrawBuffers(1, &colAtt);
preIntFBO->attachTexture(colAtt,preIntTex);
preIntFBO->release();
std::vector<Vec2f> rectVerticesPreint;
rectVerticesPreint.push_back(Vec2f(-1.0f, -1.0f));
rectVerticesPreint.push_back(Vec2f(-1.0f, 1.0f));
rectVerticesPreint.push_back(Vec2f(1.0f, 1.0f));
rectVerticesPreint.push_back(Vec2f(1.0f, -1.0f));
preIntArrayBuffer = GLArrayBuffer::create(GL_ARRAY_BUFFER);
preIntArrayBuffer->update(rectVerticesPreint.size() * sizeof(Vec2f), &rectVerticesPreint.front(), GL_STATIC_DRAW);
preIntVertexArray = GLVertexArray::create();
//initial shader
preIntProgram = GLShaderProgram::create("PreIntegration.vert", "PreIntegration.frag");
if(preIntProgram == NULL)
close();
preIntProgram->setVertexAttribute("V", preIntVertexArray, preIntArrayBuffer, 2, GL_FLOAT, false);
//draw the pre-integration texture
int w = width();
int h = height();
glViewport(0,0,tfdata.size(),tfdata.size());
preIntFBO->bind();
// glClearColor(0.0,0.0,0.0,0.0);
glDisable(GL_BLEND);
glClear(GL_DEPTH_BUFFER_BIT|GL_COLOR_BUFFER_BIT);
preIntProgram->setTexture("TF", transferFuncTex);
preIntProgram->setUniform("deltastep",deltaStep);
preIntProgram->setUniform("OCSize", opacityCorrection);
preIntProgram->begin();
preIntVertexArray->drawArrays(GL_TRIANGLE_FAN, 4);
preIntProgram->end();
preIntFBO->release();
glEnable(GL_BLEND);
glViewport(0,0,w ,h);
// glClearColor(1.0,1.0,1.0,1.0);
//bounding box shader
boundBoxProgram = GLShaderProgram::create("BoundingBox.vert", "BoundingBox.frag");
if(boundBoxProgram == NULL)
close();
//local Ambient Occulusion
//initialize
LAOTex = GLTexture::create();
LAOTex->updateTexImage3D(GL_RGBA32F, volumeDim, GL_RGBA, GL_FLOAT,NULL);
LAOFrameBuffer = GLFramebuffer::create();
LAOProgram = GLShaderProgram::create("LAO.vert", "LAO.frag");
if(LAOProgram == NULL)
close();
drawLAOTexture();
//Cubic interpolation precomputation
// volumeTexCubic = GLTexture::create();
// volumeTexCubic->updateTexImage3DNoInterpolation(GL_RGBA32F, volumeDim*3, GL_RGBA, GL_FLOAT,NULL);
// TexCubicFrameBuffer = GLFramebuffer::create();
// TexCubicProgram = GLShaderProgram::create("TriCubicCof.vert", "TriCubicCof.frag");
// if(TexCubicProgram == NULL)
// close();
// drawCubicTexture();
}
void EngineGLFW::glRendererDrawLists(ImDrawData * draw_data)
{
GLint last_blend_src;
GLint last_blend_dst;
GLint last_blend_equation_rgb;
GLint last_blend_equation_alpha;
glGetIntegerv(GL_BLEND_SRC, &last_blend_src);
glGetIntegerv(GL_BLEND_DST, &last_blend_dst);
glGetIntegerv(GL_BLEND_EQUATION_RGB, &last_blend_equation_rgb);
glGetIntegerv(GL_BLEND_EQUATION_ALPHA, &last_blend_equation_alpha);
GLboolean last_enable_blend = glIsEnabled(GL_BLEND);
GLboolean last_enable_cull_face = glIsEnabled(GL_CULL_FACE);
GLboolean last_enable_depth_test = glIsEnabled(GL_DEPTH_TEST);
GLboolean last_enable_scissor_test = glIsEnabled(GL_SCISSOR_TEST);
glEnable(GL_BLEND);
glBlendEquation(GL_FUNC_ADD);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glDisable(GL_CULL_FACE);
glDisable(GL_DEPTH_TEST);
glEnable(GL_SCISSOR_TEST);
glEnableClientState(GL_VERTEX_ARRAY);
glEnableClientState(GL_TEXTURE_COORD_ARRAY);
glEnableClientState(GL_COLOR_ARRAY);
ImGuiIO * io = &ImGui::GetIO();
float fb_height = io->DisplaySize.y * io->DisplayFramebufferScale.y;
draw_data->ScaleClipRects(io->DisplayFramebufferScale);
glMatrixMode(GL_PROJECTION);
glPushMatrix();
glLoadIdentity();
glOrtho(0.0f, io->DisplaySize.x, io->DisplaySize.y, 0.0f, -1.0f, +1.0f);
glMatrixMode(GL_MODELVIEW);
glPushMatrix();
glLoadIdentity();
for(int n = 0; n < draw_data->CmdListsCount; n++)
{
const ImDrawList * cmd_list = draw_data->CmdLists[n];
const unsigned char * vtx_buffer = (const unsigned char *)&cmd_list->VtxBuffer.front();
const ImDrawIdx * idx_buffer = &cmd_list->IdxBuffer.front();
glVertexPointer(2, GL_FLOAT, sizeof(ImDrawVert), (void *)(vtx_buffer + OFFSETOF(ImDrawVert, pos)));
glTexCoordPointer(2, GL_FLOAT, sizeof(ImDrawVert), (void *)(vtx_buffer + OFFSETOF(ImDrawVert, uv)));
glColorPointer(4, GL_UNSIGNED_BYTE, sizeof(ImDrawVert), (void *)(vtx_buffer + OFFSETOF(ImDrawVert, col)));
for(int cmd_i = 0; cmd_i < cmd_list->CmdBuffer.size(); cmd_i++)
{
const ImDrawCmd * pcmd = &cmd_list->CmdBuffer[cmd_i];
if(pcmd->UserCallback)
{
pcmd->UserCallback(cmd_list, pcmd);
} else {
ofTexture tex;
tex.texData.textureTarget = GL_TEXTURE_2D;
tex.setUseExternalTextureID((intptr_t)pcmd->TextureId);
tex.bind();
glScissor(
(int)pcmd->ClipRect.x,
(int)(fb_height - pcmd->ClipRect.w),
(int)(pcmd->ClipRect.z - pcmd->ClipRect.x),
(int)(pcmd->ClipRect.w - pcmd->ClipRect.y)
);
glDrawElements(GL_TRIANGLES, (GLsizei)pcmd->ElemCount, GL_UNSIGNED_INT, idx_buffer);
tex.unbind();
}
idx_buffer += pcmd->ElemCount;
}
}
glDisableClientState(GL_COLOR_ARRAY);
glDisableClientState(GL_TEXTURE_COORD_ARRAY);
glDisableClientState(GL_VERTEX_ARRAY);
glBlendEquationSeparate(last_blend_equation_rgb, last_blend_equation_alpha);
glBlendFunc(last_blend_src, last_blend_dst);
last_enable_blend ? glEnable(GL_BLEND) : glDisable(GL_BLEND);
last_enable_cull_face ? glEnable(GL_CULL_FACE) : glDisable(GL_CULL_FACE);
last_enable_depth_test ? glEnable(GL_DEPTH_TEST) : glDisable(GL_DEPTH_TEST);
last_enable_scissor_test ? glEnable(GL_SCISSOR_TEST) : glDisable(GL_SCISSOR_TEST);
glMatrixMode(GL_MODELVIEW);
glPopMatrix();
glMatrixMode(GL_PROJECTION);
glPopMatrix();
glPopAttrib();
}
void FGLRenderBuffers::RenderEffect(const FString &name)
{
if (hw_postprocess.Effects[name].Size() == 0)
return;
FGLDebug::PushGroup(name.GetChars());
FGLPostProcessState savedState;
for (const PPStep &step : hw_postprocess.Effects[name])
{
// Bind input textures
for (unsigned int index = 0; index < step.Textures.Size(); index++)
{
savedState.SaveTextureBindings(index + 1);
const PPTextureInput &input = step.Textures[index];
int filter = (input.Filter == PPFilterMode::Nearest) ? GL_NEAREST : GL_LINEAR;
int wrap = (input.Wrap == PPWrapMode::Clamp) ? GL_CLAMP : GL_REPEAT;
switch (input.Type)
{
default:
case PPTextureType::CurrentPipelineTexture:
BindCurrentTexture(index, filter, wrap);
break;
case PPTextureType::NextPipelineTexture:
I_FatalError("PPTextureType::NextPipelineTexture not allowed as input\n");
break;
case PPTextureType::PPTexture:
GLTextures[input.Texture].Bind(index, filter, wrap);
break;
case PPTextureType::SceneColor:
BindSceneColorTexture(index);
break;
case PPTextureType::SceneFog:
BindSceneFogTexture(index);
break;
case PPTextureType::SceneNormal:
BindSceneNormalTexture(index);
break;
case PPTextureType::SceneDepth:
BindSceneDepthTexture(index);
break;
}
}
// Set render target
switch (step.Output.Type)
{
default:
I_FatalError("Unsupported postprocess output type\n");
break;
case PPTextureType::CurrentPipelineTexture:
BindCurrentFB();
break;
case PPTextureType::NextPipelineTexture:
BindNextFB();
break;
case PPTextureType::PPTexture:
if (GLTextureFBs[step.Output.Texture])
GLTextureFBs[step.Output.Texture].Bind();
else
GLTextureFBs[step.Output.Texture] = CreateFrameBuffer(step.Output.Texture.GetChars(), GLTextures[step.Output.Texture]);
break;
case PPTextureType::SceneColor:
BindSceneFB(false);
break;
}
// Set blend mode
if (step.BlendMode.BlendOp == STYLEOP_Add && step.BlendMode.SrcAlpha == STYLEALPHA_One && step.BlendMode.DestAlpha == STYLEALPHA_Zero && step.BlendMode.Flags == 0)
{
glDisable(GL_BLEND);
}
else
{
// To do: support all the modes
glEnable(GL_BLEND);
glBlendEquation(GL_FUNC_ADD);
if (step.BlendMode.SrcAlpha == STYLEALPHA_One && step.BlendMode.DestAlpha == STYLEALPHA_One)
glBlendFunc(GL_ONE, GL_ONE);
else
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
}
// Setup viewport
glViewport(step.Viewport.left, step.Viewport.top, step.Viewport.width, step.Viewport.height);
auto &shader = GLShaders[step.ShaderName];
// Set uniforms
if (step.Uniforms.Data.Size() > 0)
{
if (!shader->Uniforms)
shader->Uniforms.reset(screen->CreateDataBuffer(POSTPROCESS_BINDINGPOINT, false));
shader->Uniforms->SetData(step.Uniforms.Data.Size(), step.Uniforms.Data.Data());
shader->Uniforms->BindBase();
}
// Set shader
shader->Bind(NOQUEUE);
// Draw the screen quad
GLRenderer->RenderScreenQuad();
// Advance to next PP texture if our output was sent there
if (step.Output.Type == PPTextureType::NextPipelineTexture)
NextTexture();
}
glViewport(screen->mScreenViewport.left, screen->mScreenViewport.top, screen->mScreenViewport.width, screen->mScreenViewport.height);
FGLDebug::PopGroup();
}
static void
generate_and_display_drawbuffers(int count)
{
GLuint tex[16], fb, fs, vs, prog;
GLenum attachments[16], status;
int i;
char fs_output_line[256];
char fs_full_source[1024];
glGenFramebuffersEXT(1, &fb);
glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, fb);
for (i = 0; i < count; i++) {
tex[i] = attach_texture(i);
attachments[i] = GL_COLOR_ATTACHMENT0 + i;
}
status = glCheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT);
if (status != GL_FRAMEBUFFER_COMPLETE_EXT) {
fprintf(stderr, "fbo incomplete (status = 0x%04x)\n", status);
piglit_report_result(PIGLIT_SKIP);
}
glDrawBuffersARB(count, attachments);
/* Clear all to 0.25 so we see if the shader rendering happens. */
glClearColor(clear_value, clear_value, clear_value, clear_value);
glClear(GL_COLOR_BUFFER_BIT);
/* Build the shader that spams green to all outputs. */
vs = piglit_compile_shader_text(GL_VERTEX_SHADER, vs_source);
strcpy(fs_full_source, fs_source_start);
for (i = 0; i < count; i++) {
sprintf(fs_output_line, fs_source_output, i, output_values[i * 4],
output_values[(i * 4) + 1], output_values[(i * 4) + 2],
output_values[(i * 4) + 3]);
strcat(fs_full_source, fs_output_line);
}
strcat(fs_full_source, fs_source_end);
assert(strlen(fs_full_source) + 1 < sizeof(fs_full_source) / sizeof(fs_full_source[0]));
fs = piglit_compile_shader_text(GL_FRAGMENT_SHADER, fs_full_source);
prog = piglit_link_simple_program(vs, fs);
glUseProgram(prog);
glEnable(GL_BLEND);
glBlendFunc(GL_ONE, GL_ONE);
glBlendEquation(GL_FUNC_ADD);
/* Now render to all the color buffers. */
piglit_draw_rect(-1, -1, 2, 2);
glDisable(GL_BLEND);
/* OK, now draw each of these textures to the winsys framebuffer. */
glUseProgram(0);
glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
piglit_ortho_projection(piglit_width, piglit_height, GL_FALSE);
glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
glEnable(GL_TEXTURE_2D);
for (i = 0; i < count; i++) {
glBindTexture(GL_TEXTURE_2D, tex[i]);
piglit_draw_rect_tex(16 * i, 16 * (count - 1),
16, 16,
0, 0,
1, 1);
}
glDisable(GL_TEXTURE_2D);
for (i = 0; i < count; i++) {
glDeleteTextures(1, &tex[i]);
}
glDeleteFramebuffersEXT(1, &fb);
}
static void RenderDrawLists(ImDrawData* draw_data)
{
// Avoid rendering when minimized, scale coordinates for retina displays (screen coordinates != framebuffer coordinates)
ImGuiIO& io = ImGui::GetIO();
int fb_width = (int)(io.DisplaySize.x * io.DisplayFramebufferScale.x);
int fb_height = (int)(io.DisplaySize.y * io.DisplayFramebufferScale.y);
if (fb_width == 0 || fb_height == 0)
return;
draw_data->ScaleClipRects(io.DisplayFramebufferScale);
// Backup GL state
GLint last_program; glGetIntegerv(GL_CURRENT_PROGRAM, &last_program);
GLint last_texture; glGetIntegerv(GL_TEXTURE_BINDING_2D, &last_texture);
GLint last_active_texture; glGetIntegerv(GL_ACTIVE_TEXTURE, &last_active_texture);
GLint last_array_buffer; glGetIntegerv(GL_ARRAY_BUFFER_BINDING, &last_array_buffer);
GLint last_element_array_buffer; glGetIntegerv(GL_ELEMENT_ARRAY_BUFFER_BINDING, &last_element_array_buffer);
GLint last_vertex_array; glGetIntegerv(GL_VERTEX_ARRAY_BINDING, &last_vertex_array);
GLint last_blend_src; glGetIntegerv(GL_BLEND_SRC, &last_blend_src);
GLint last_blend_dst; glGetIntegerv(GL_BLEND_DST, &last_blend_dst);
GLint last_blend_equation_rgb; glGetIntegerv(GL_BLEND_EQUATION_RGB, &last_blend_equation_rgb);
GLint last_blend_equation_alpha; glGetIntegerv(GL_BLEND_EQUATION_ALPHA, &last_blend_equation_alpha);
GLint last_viewport[4]; glGetIntegerv(GL_VIEWPORT, last_viewport);
GLboolean last_enable_blend = glIsEnabled(GL_BLEND);
GLboolean last_enable_cull_face = glIsEnabled(GL_CULL_FACE);
GLboolean last_enable_depth_test = glIsEnabled(GL_DEPTH_TEST);
GLboolean last_enable_scissor_test = glIsEnabled(GL_SCISSOR_TEST);
CheckOpenGLError("State backup", 57);
// Setup render state: alpha-blending enabled, no face culling, no depth testing, scissor enabled
glEnable(GL_BLEND);
glBlendEquation(GL_FUNC_ADD);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glDisable(GL_CULL_FACE);
glDisable(GL_DEPTH_TEST);
glEnable(GL_SCISSOR_TEST);
glActiveTexture(GL_TEXTURE0);
CheckOpenGLError("State setup", 75);
// Setup orthographic projection matrix
glViewport(0, 0, (GLsizei)fb_width, (GLsizei)fb_height);
CheckOpenGLError("Viewport", 84);
const float ortho_projection[4][4] =
{
{ 2.0f/io.DisplaySize.x, 0.0f, 0.0f, 0.0f },
{ 0.0f, 2.0f/-io.DisplaySize.y, 0.0f, 0.0f },
{ 0.0f, 0.0f, -1.0f, 0.0f },
{-1.0f, 1.0f, 0.0f, 1.0f },
};
glUseProgram(g_shaderHandle);
CheckOpenGLError("Program", 85);
glUniform1i(g_attribLocationTex, 0);
glUniformMatrix4fv(g_attribLocationProjMtx, 1, GL_FALSE, &ortho_projection[0][0]);
CheckOpenGLError("Program + uniforms", 94);
GLenum error = GL_NO_ERROR;
error = glGetError();
if (GL_NO_ERROR != error) {
printf("GL Error %x encountered in %s.\n", error);
}
glBindVertexArrayAPPLE(g_vaoHandle);
for (int n = 0; n < draw_data->CmdListsCount; n++)
{
const ImDrawList* cmd_list = draw_data->CmdLists[n];
const ImDrawIdx* idx_buffer_offset = 0;
glBindBuffer(GL_ARRAY_BUFFER, g_vboHandle);
glBufferData(GL_ARRAY_BUFFER, (GLsizeiptr)cmd_list->VtxBuffer.size() * sizeof(ImDrawVert), (GLvoid*)&cmd_list->VtxBuffer.front(), GL_STREAM_DRAW);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, g_elementsHandle);
glBufferData(GL_ELEMENT_ARRAY_BUFFER, (GLsizeiptr)cmd_list->IdxBuffer.size() * sizeof(ImDrawIdx), (GLvoid*)&cmd_list->IdxBuffer.front(), GL_STREAM_DRAW);
if(glGetError() != GL_NO_ERROR){std::cout << "houston we have a binding" << std::endl;}
for (const ImDrawCmd* pcmd = cmd_list->CmdBuffer.begin(); pcmd != cmd_list->CmdBuffer.end(); pcmd++)
{
if (pcmd->UserCallback)
{
pcmd->UserCallback(cmd_list, pcmd);
}
else
{
glBindTexture(GL_TEXTURE_2D, (GLuint)(intptr_t)pcmd->TextureId);
glScissor((int)pcmd->ClipRect.x, (int)(fb_height - pcmd->ClipRect.w), (int)(pcmd->ClipRect.z - pcmd->ClipRect.x), (int)(pcmd->ClipRect.w - pcmd->ClipRect.y));
glDrawElements(GL_TRIANGLES, (GLsizei)pcmd->ElemCount, sizeof(ImDrawIdx) == 2 ? GL_UNSIGNED_SHORT : GL_UNSIGNED_INT, idx_buffer_offset);
}
idx_buffer_offset += pcmd->ElemCount;
}
}
if(glGetError() != GL_NO_ERROR){std::cout << "houston we have a drawing" << std::endl;}
// Restore modified GL state
glUseProgram(last_program);
glActiveTexture(last_active_texture);
glBindTexture(GL_TEXTURE_2D, last_texture);
glBindVertexArrayAPPLE(last_vertex_array);
glBindBuffer(GL_ARRAY_BUFFER, last_array_buffer);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, last_element_array_buffer);
glBlendEquationSeparate(last_blend_equation_rgb, last_blend_equation_alpha);
glBlendFunc(last_blend_src, last_blend_dst);
if (last_enable_blend) glEnable(GL_BLEND); else glDisable(GL_BLEND);
if (last_enable_cull_face) glEnable(GL_CULL_FACE); else glDisable(GL_CULL_FACE);
if (last_enable_depth_test) glEnable(GL_DEPTH_TEST); else glDisable(GL_DEPTH_TEST);
if (last_enable_scissor_test) glEnable(GL_SCISSOR_TEST); else glDisable(GL_SCISSOR_TEST);
glViewport(last_viewport[0], last_viewport[1], (GLsizei)last_viewport[2], (GLsizei)last_viewport[3]);
if(glGetError() != GL_NO_ERROR){std::cout << "houston we have a reinitializing" << std::endl;}
}
void geBlendEquation(int mode){
glBlendEquation(mode);
}
void BlendEquationProtocol::onBlendEquationBegin(
const cocos2d::Mat4 &transform, uint32_t flags)
{
glBlendEquation(m_blendEquation);
}
//----------------------------------------------------------------------------------------------------------------------
// The SSAO pass.
// It uses the position and normal texture attachements.
// The result is blended in the texture 7 (COLOR_ATTACHEMENT7) which holds the final image
// The blending is done using the alpha channel since the ssao is outputed in the alpha channel in the shader.
//
void DeferredShading::generateSSAOPass(GLint &_shaderNumber,
ngl::TransformStack &_tx
)
{
// We attach our SSAO texture.
glDrawBuffer(GL_COLOR_ATTACHMENT7);
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, m_posTex);
glActiveTexture(GL_TEXTURE1);
glBindTexture(GL_TEXTURE_2D, m_normTex);
// The sample textures used in SSAO
glActiveTexture(GL_TEXTURE19);
// The sample texture loaded in the begining.
glBindTexture(GL_TEXTURE_2D,11);
glDisable(GL_DEPTH_TEST);
glEnable(GL_BLEND);
glBlendEquation(GL_FUNC_ADD);
// Blending the final image with the SSAO texture. In the shader we store the SSAO values as alpha.
glBlendFunc(GL_ONE, GL_SRC_ALPHA);
//glBlendFunc(GL_ONE, GL_ONE);
if((_shaderNumber <= m_shaderNumber) && (_shaderNumber >= 0))
{
// Set our shader as active
ngl::ShaderLib *shader=ngl::ShaderLib::instance();
m_deferredShader[_shaderNumber]->setShaderAsActive();
// Set the textures to be used.
shader->setShaderParam1i("PosTex", 0);
shader->setShaderParam1i("NormalTex", 2);
shader->setShaderParam1i("SampleTex", 19);
// Projection matrix
ngl::Mat3 ProjectionMatrix = m_camera->getProjectionMatrix();
shader->setShaderParamFromMat3("Projection",ProjectionMatrix);
// Set the screensize in order to use the correct TexCoords
shader->setShaderParam2f("gScreenSize", m_renderWidth, m_renderHeight);
_tx.pushTransform();
{
// transformation matrices
ngl::Mat4 MVP;
MVP.identity();
shader->setShaderParamFromMat4("MVP",MVP);
// Render the quad with the SSAO
glBindVertexArray(m_quad);
glDrawArrays(GL_TRIANGLES, 0, 6);
glDisable(GL_BLEND);
}
_tx.popTransform();
}
else
{
std::cout<<"The shader with number "<< _shaderNumber<<" doesn't exist. Cannot render with an unknown shader! \n";
}
}
JNIEXPORT void JNICALL Java_org_lwjgl_opengl_GL14_nglBlendEquation(JNIEnv *env, jclass clazz, jint mode, jlong function_pointer) {
glBlendEquationPROC glBlendEquation = (glBlendEquationPROC)((intptr_t)function_pointer);
glBlendEquation(mode);
}
static
void
do_presentation_queue_display(VdpPresentationQueueData *pqData)
{
pthread_mutex_lock(&pqData->queue_mutex);
assert(pqData->queue.used > 0);
const int entry = pqData->queue.head;
VdpDeviceData *deviceData = pqData->device;
VdpOutputSurface surface = pqData->queue.item[entry].surface;
const uint32_t clip_width = pqData->queue.item[entry].clip_width;
const uint32_t clip_height = pqData->queue.item[entry].clip_height;
// remove first entry from queue
pqData->queue.used --;
pqData->queue.freelist[pqData->queue.head] = pqData->queue.firstfree;
pqData->queue.firstfree = pqData->queue.head;
pqData->queue.head = pqData->queue.item[pqData->queue.head].next;
pthread_mutex_unlock(&pqData->queue_mutex);
VdpOutputSurfaceData *surfData = handle_acquire(surface, HANDLETYPE_OUTPUT_SURFACE);
if (surfData == NULL)
return;
glx_context_push_global(deviceData->display, pqData->target->drawable, pqData->target->glc);
const uint32_t target_width = (clip_width > 0) ? clip_width : surfData->width;
const uint32_t target_height = (clip_height > 0) ? clip_height : surfData->height;
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glOrtho(0, target_width, target_height, 0, -1.0, 1.0);
glViewport(0, 0, target_width, target_height);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
glMatrixMode(GL_TEXTURE);
glLoadIdentity();
glScalef(1.0f/surfData->width, 1.0f/surfData->height, 1.0f);
glEnable(GL_TEXTURE_2D);
glDisable(GL_BLEND);
glBindTexture(GL_TEXTURE_2D, surfData->tex_id);
glColor4f(1, 1, 1, 1);
glBegin(GL_QUADS);
glTexCoord2i(0, 0); glVertex2i(0, 0);
glTexCoord2i(target_width, 0); glVertex2i(target_width, 0);
glTexCoord2i(target_width, target_height); glVertex2i(target_width, target_height);
glTexCoord2i(0, target_height); glVertex2i(0, target_height);
glEnd();
if (global.quirks.show_watermark) {
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glBlendEquation(GL_FUNC_ADD);
glBindTexture(GL_TEXTURE_2D, deviceData->watermark_tex_id);
glMatrixMode(GL_TEXTURE);
glLoadIdentity();
glColor3f(0.8, 0.08, 0.35);
glBegin(GL_QUADS);
glTexCoord2i(0, 0);
glVertex2i(target_width - watermark_width, target_height - watermark_height);
glTexCoord2i(1, 0);
glVertex2i(target_width, target_height - watermark_height);
glTexCoord2i(1, 1);
glVertex2i(target_width, target_height);
glTexCoord2i(0, 1);
glVertex2i(target_width - watermark_width, target_height);
glEnd();
}
glXSwapBuffers(deviceData->display, pqData->target->drawable);
struct timespec now;
clock_gettime(CLOCK_REALTIME, &now);
surfData->first_presentation_time = timespec2vdptime(now);
surfData->status = VDP_PRESENTATION_QUEUE_STATUS_IDLE;
if (global.quirks.log_pq_delay) {
const int64_t delta = timespec2vdptime(now) - surfData->queued_at;
const struct timespec delta_ts = vdptime2timespec(delta);
traceInfo("pqdelay %d.%09d %d.%09d\n", (int)now.tv_sec, (int)now.tv_nsec,
delta_ts.tv_sec, delta_ts.tv_nsec);
}
GLenum gl_error = glGetError();
glx_context_pop();
handle_release(surface);
if (GL_NO_ERROR != gl_error) {
traceError("error (VdpPresentationQueueDisplay): gl error %d\n", gl_error);
}
}
/*** Función: configura openGL ***/
void SetOpenGL( int width, int height , // Dimensión del la ventana
const GLfloat* clearColor , // Color de borrado
const GLfloat* ambientColor ) // Color de luz ambiente natural
{
// Habilito el uso de arreglos de vértices, normales y texturas
glEnableClientState( GL_VERTEX_ARRAY );
glEnableClientState( GL_NORMAL_ARRAY );
glEnableClientState( GL_TEXTURE_COORD_ARRAY );
// Sólido
glPolygonMode( GL_FRONT_AND_BACK, GL_FILL );
// Habilito back-face culling
glEnable( GL_CULL_FACE );
// Descarte los polígonos mirando hacia atrás
glCullFace( GL_BACK );
// Cara delantera sentido horario
glFrontFace( GL_CW );
// Habilito el Z-buffer
glEnable( GL_DEPTH_TEST );
// La función de profundidad
glDepthFunc( GL_LEQUAL );
// Habilito luces
glEnable( GL_LIGHTING );
// Suavizado para los colores de luz
glShadeModel( GL_SMOOTH );
// Normalizar los vértices normales
glEnable( GL_NORMALIZE );
// Luz ambiente promedio
glLightModelfv( GL_LIGHT_MODEL_AMBIENT, ambientColor );
// Habilito las luces especulares respecto a la cámara
glLightModeli( GL_LIGHT_MODEL_COLOR_CONTROL, GL_SEPARATE_SPECULAR_COLOR );
glLightModeli( GL_LIGHT_MODEL_LOCAL_VIEWER, GL_TRUE );
// Habilito texturas
glEnable( GL_TEXTURE_2D );
// Filtro de las texturas
glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR );
glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR );
// Especifico la forma de blending(transparencia)
glBlendEquation( GL_FUNC_ADD );
glBlendFunc( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA );
glAlphaFunc( GL_GREATER, 0 );
// Habilito los puntos con AA
glEnable( GL_POINT_SMOOTH );
// Mejoras
glHint( GL_POINT_SMOOTH_HINT , GL_NICEST );
glHint( GL_LINE_SMOOTH_HINT , GL_NICEST );
glHint( GL_POLYGON_SMOOTH_HINT , GL_NICEST );
glHint( GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST );
glHint( GL_GENERATE_MIPMAP_HINT , GL_NICEST );
glHint( GL_TEXTURE_COMPRESSION_HINT , GL_NICEST );
glHint( GL_FOG_HINT , GL_NICEST );
// Color de limpiado
glClearColor( clearColor[0], clearColor[1], clearColor[2], clearColor[3] );
// Limpiado del Z-buffer
glClearDepth( 1.0f );
// Limipado del Stencil-buffer
glClearStencil( 0 );
// Viewport
glViewport( 0, 0, width, height );
}
void GAFSprite::draw(void)
{
if (_isLocator)
{
return;
}
CC_PROFILER_START_CATEGORY(kCCProfilerCategorySprite, "GAFSprite - draw");
CCAssert(!m_pobBatchNode, "If CCSprite is being rendered by CCSpriteBatchNode, CCSprite#draw SHOULD NOT be called");
CC_NODE_DRAW_SETUP();
if (_useSeparateBlendFunc)
{
glBlendFuncSeparate(_blendFuncSeparate.src, _blendFuncSeparate.dst,
_blendFuncSeparate.srcAlpha, _blendFuncSeparate.dstAlpha);
}
else
{
ccGLBlendFunc(m_sBlendFunc.src, m_sBlendFunc.dst);
}
if (_blendEquation != -1)
{
glBlendEquation(_blendEquation);
}
if (m_pobTexture != NULL)
{
ccGLBindTexture2D( m_pobTexture->getName() );
}
else
{
ccGLBindTexture2D(0);
}
//
// Attributes
//
ccGLEnableVertexAttribs( kCCVertexAttribFlag_PosColorTex );
setUniformsForFragmentShader();
CHECK_GL_ERROR_DEBUG();
#define kQuadSize sizeof(m_sQuad.bl)
long offset = (long)&m_sQuad;
// vertex
int diff = offsetof( ccV3F_C4B_T2F, vertices);
glVertexAttribPointer(kCCVertexAttrib_Position, 3, GL_FLOAT, GL_FALSE, kQuadSize, (void*) (offset + diff));
// texCoods
diff = offsetof( ccV3F_C4B_T2F, texCoords);
glVertexAttribPointer(kCCVertexAttrib_TexCoords, 2, GL_FLOAT, GL_FALSE, kQuadSize, (void*)(offset + diff));
// color
diff = offsetof( ccV3F_C4B_T2F, colors);
glVertexAttribPointer(kCCVertexAttrib_Color, 4, GL_UNSIGNED_BYTE, GL_TRUE, kQuadSize, (void*)(offset + diff));
glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
CHECK_GL_ERROR_DEBUG();
CC_INCREMENT_GL_DRAWS(1);
CC_PROFILER_STOP_CATEGORY(kCCProfilerCategorySprite, "GAFSprite - draw");
}
/*!****************************************************************************
@Function RenderScene
@Return bool true if no error occured
@Description Main rendering loop function of the program. The shell will
call this function every frame.
eglSwapBuffers() will be performed by PVRShell automatically.
PVRShell will also manage important OS events.
Will also manage relevent OS events. The user has access to
these events through an abstraction layer provided by PVRShell.
******************************************************************************/
bool OGLES2MaximumIntensityBlend::RenderScene()
{
// Clears the color and depth buffer
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
// Enable blending
glEnable(GL_BLEND);
glBlendEquation(GL_MAX_EXT);
/*
Calculates the frame number to animate in a time-based manner.
Uses the shell function PVRShellGetTime() to get the time in milliseconds.
*/
unsigned long ulTime = PVRShellGetTime();
unsigned long ulDeltaTime = ulTime - m_ulTimePrev;
m_ulTimePrev = ulTime;
m_fFrame += (float)ulDeltaTime * DEMO_FRAME_RATE;
if (m_fFrame > m_Scene.nNumFrame-1)
m_fFrame = 0;
// Sets the scene animation to this frame
m_Scene.SetFrame(m_fFrame);
PVRTVec3 vLightDir;
{
PVRTVec3 vFrom, vTo, vUp;
VERTTYPE fFOV;
vUp.x = 0.0f;
vUp.y = 1.0f;
vUp.z = 0.0f;
// We can get the camera position, target and field of view (fov) with GetCameraPos()
fFOV = m_Scene.GetCameraPos(vFrom, vTo, 0) * 0.6;
/*
We can build the world view matrix from the camera position, target and an up vector.
For this we use PVRTMat4LookAtRH().
*/
m_mView = PVRTMat4::LookAtRH(vFrom, vTo, vUp);
vLightDir = vFrom;
// Calculates the projection matrix
bool bRotate = PVRShellGet(prefIsRotated) && PVRShellGet(prefFullScreen);
m_mProjection = PVRTMat4::PerspectiveFovRH(fFOV, (float)PVRShellGet(prefWidth)/(float)PVRShellGet(prefHeight), CAM_NEAR, CAM_FAR, PVRTMat4::OGL, bRotate);
}
/*
A scene is composed of nodes. There are 3 types of nodes:
- MeshNodes :
references a mesh in the pMesh[].
These nodes are at the beginning of the pNode[] array.
And there are nNumMeshNode number of them.
This way the .pod format can instantiate several times the same mesh
with different attributes.
- lights
- cameras
To draw a scene, you must go through all the MeshNodes and draw the referenced meshes.
*/
for (int i=0; i<(int)m_Scene.nNumMeshNode; i++)
{
SPODNode* pNode = &m_Scene.pNode[i];
// Gets pMesh referenced by the pNode
SPODMesh* pMesh = &m_Scene.pMesh[pNode->nIdx];
glBindBuffer(GL_ARRAY_BUFFER, m_aiVboID[i]);
// Gets the node model matrix
PVRTMat4 mWorld;
mWorld = m_Scene.GetWorldMatrix(*pNode);
PVRTMat4 mWorldView;
mWorldView = m_mView * mWorld;
// Retrieve the list of required uniforms
CPVRTPFXEffect* pEffect;
SPODMaterial* pMat = &m_Scene.pMaterial[pNode->nIdxMaterial];
if(pMat->nIdxTexDiffuse != -1)
{
pEffect = m_pEffectTextured;
}
else
{
pEffect = m_pEffect;
}
pEffect->Activate();
const CPVRTArray<SPVRTPFXUniform>& aUniforms = pEffect->GetUniformArray();
/*
Now we loop over the uniforms requested by the PFX file.
Using the switch statement allows us to handle all of the required semantics
*/
for(unsigned int j = 0; j < aUniforms.GetSize(); ++j)
{
switch(aUniforms[j].nSemantic)
{
case ePVRTPFX_UsPOSITION:
{
glVertexAttribPointer(aUniforms[j].nLocation, 3, GL_FLOAT, GL_FALSE, pMesh->sVertex.nStride, pMesh->sVertex.pData);
glEnableVertexAttribArray(aUniforms[j].nLocation);
}
break;
case ePVRTPFX_UsNORMAL:
{
glVertexAttribPointer(aUniforms[j].nLocation, 3, GL_FLOAT, GL_FALSE, pMesh->sNormals.nStride, pMesh->sNormals.pData);
glEnableVertexAttribArray(aUniforms[j].nLocation);
}
break;
case ePVRTPFX_UsUV:
{
glVertexAttribPointer(aUniforms[j].nLocation, 2, GL_FLOAT, GL_FALSE, pMesh->psUVW[0].nStride, pMesh->psUVW[0].pData);
glEnableVertexAttribArray(aUniforms[j].nLocation);
}
break;
case ePVRTPFX_UsWORLDVIEWPROJECTION:
{
PVRTMat4 mWVP;
// Passes the world-view-projection matrix (WVP) to the shader to transform the vertices
mWVP = m_mProjection * mWorldView;
glUniformMatrix4fv(aUniforms[j].nLocation, 1, GL_FALSE, mWVP.f);
}
break;
case eUsINTENSITY:
{
int iMat = pNode->nIdxMaterial;
SPODMaterial* pMat = &m_Scene.pMaterial[iMat];
float fIntensity = pMat->pfMatDiffuse[0]; // Take R value for intensity
glUniform1f(aUniforms[j].nLocation, fIntensity);
}
break;
case ePVRTPFX_UsTEXTURE:
{
glUniform1i(aUniforms[j].nLocation, 0);
}
break;
case ePVRTPFX_UsWORLDVIEWIT:
{
PVRTMat3 mWorldViewIT3x3(mWorldView.inverse().transpose());
glUniformMatrix3fv(aUniforms[j].nLocation, 1, GL_FALSE, mWorldViewIT3x3.f);
}
break;
case ePVRTPFX_UsLIGHTDIREYE:
{
PVRTVec4 vLightDirView = (m_mView * PVRTVec4(-vLightDir, 1.0f)).normalize();
glUniform3fv(aUniforms[j].nLocation, 1, vLightDirView.ptr());
}
break;
}
}
/*
Now that the model-view matrix is set and the materials ready,
call another function to actually draw the mesh.
*/
DrawMesh(pMesh);
glBindBuffer(GL_ARRAY_BUFFER, 0);
/*
Now disable all of the enabled attribute arrays that the PFX requested.
*/
for(unsigned int j = 0; j < aUniforms.GetSize(); ++j)
{
switch(aUniforms[j].nSemantic)
{
case ePVRTPFX_UsNORMAL:
case ePVRTPFX_UsUV:
case ePVRTPFX_UsPOSITION:
{
glDisableVertexAttribArray(aUniforms[j].nLocation);
}
break;
}
}
}
// Reset blending
// Enable blending
glBlendEquation(GL_FUNC_ADD);
glDisable(GL_BLEND);
// Determine which title to show. The default title is quite long, so we display a shortened version if
// it cannot fit on the screen.
const char* pszTitle = NULL;
{
bool bRotate = PVRShellGet(prefIsRotated) && PVRShellGet(prefFullScreen);
float fW, fH;
m_Print3D.MeasureText(&fW, &fH, 1.0f, c_pszTitle);
int iScreenW = bRotate ? PVRShellGet(prefHeight) : PVRShellGet(prefWidth);
if((int)fW >= iScreenW)
{
pszTitle = c_pszTitleShort;
}
else
{
pszTitle = c_pszTitle;
}
}
// Displays the demo name using the tools. For a detailed explanation, see the training course IntroducingPVRTools
m_Print3D.DisplayDefaultTitle(pszTitle, "", ePVRTPrint3DSDKLogo);
m_Print3D.Flush();
return true;
}
void DeferredShading::deferredDirectionalLight(
GLint &_shaderNumber,
ngl::TransformStack &_tx,
GLint &_lightIndex
)
{
glDrawBuffer(GL_COLOR_ATTACHMENT7);
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, m_posTex);
glActiveTexture(GL_TEXTURE1);
glBindTexture(GL_TEXTURE_2D, m_normTex);
glActiveTexture(GL_TEXTURE2);
glBindTexture(GL_TEXTURE_2D, m_colorTex);
glActiveTexture(GL_TEXTURE3);
glBindTexture(GL_TEXTURE_2D, m_tangentTex);
glActiveTexture(GL_TEXTURE4);
glBindTexture(GL_TEXTURE_2D, m_binormalTex);
glActiveTexture(GL_TEXTURE5);
glBindTexture(GL_TEXTURE_2D, m_normalMapTex);
glActiveTexture(GL_TEXTURE6);
glBindTexture(GL_TEXTURE_2D, m_specularTex);
glDisable(GL_DEPTH_TEST);
glEnable(GL_BLEND);
glBlendEquation(GL_FUNC_ADD);
glBlendFunc(GL_ONE, GL_ONE);
if((_shaderNumber <= m_shaderNumber) && (_shaderNumber >= 0))
{
// Set our shader as active
ngl::ShaderLib *shader=ngl::ShaderLib::instance();
m_deferredShader[_shaderNumber]->setShaderAsActive();
// Making the light stay fixed relative to the world.
// This is the only way to make it "stick". Multiplying by the transpose matrix doesn't work for unknown reasons...
ngl::Vec4 m_currPos = m_deferredShader[_shaderNumber]->m_light[_lightIndex]->getPos();
ngl::Mat4 globalMV = _tx.getGlobalTransform().getMatrix() * m_camera->getViewMatrix();
// For rotation
m_currPos = m_currPos * globalMV;
// For position
m_currPos.m_x = m_currPos.m_x + globalMV.m_30;
m_currPos.m_y = m_currPos.m_y + globalMV.m_31;
m_currPos.m_z = m_currPos.m_z + globalMV.m_32;
ngl::Vec4 result = ngl::Vec4(m_currPos.m_x, m_currPos.m_y, m_currPos.m_z, m_currPos.m_w);
// load these values to the shader as well
m_deferredShader[_shaderNumber]->m_light[_lightIndex]->loadToShader("light");
shader->setShaderParam4f("light.position",result.m_x, result.m_y, result.m_z, result.m_w);
shader->setShaderParam2f("gScreenSize", m_renderWidth, m_renderHeight);
_tx.pushTransform();
{
// transformation matrices
ngl::Mat4 MVP;
MVP.identity();
shader->setShaderParamFromMat4("MVP",MVP);
// Render the quad
glBindVertexArray(m_quad);
glDrawArrays(GL_TRIANGLES, 0, 6);
glDisable(GL_BLEND);
}
_tx.popTransform();
}
else
{
std::cout<<"The shader with number "<< _shaderNumber<<" doesn't exist. Cannot render with an unknown shader! \n";
}
}
void FoamPass::Advance(double _dt)
{
for (auto node : m_nodeGroup.Nodes())
{
TerrainGeometry& terrainGeom = *node->geom;
FoamParticleGeom& particleGeom = *node->foamGeom;
TerrainMaterial& material = *node->material;
// Update
{
glBindProgramPipeline(GL_NONE);
m_foamParticleUpdateShader.BindPerPass();
if (particleGeom.Switch())
{
GL_CHECK(glBindTransformFeedback(GL_TRANSFORM_FEEDBACK, particleGeom.TransformFeedbackObjB()));
GL_CHECK(glBindVertexArray(particleGeom.VertexArrayA()));
}
else
{
GL_CHECK(glBindTransformFeedback(GL_TRANSFORM_FEEDBACK, particleGeom.TransformFeedbackObjA()));
GL_CHECK(glBindVertexArray(particleGeom.VertexArrayB()));
}
GL_CHECK(glBeginTransformFeedback(GL_POINTS));
GL_CHECK(glEnable(GL_RASTERIZER_DISCARD));
auto& vertexShader = m_foamParticleUpdateShader.VertexShader();
vertexShader.SetTexture("s_heightData", terrainGeom.HeightData().GetRead());
vertexShader.SetTexture("s_velocityData", terrainGeom.VelocityData().GetRead());
GL_CHECK(glDrawArrays(GL_POINTS, 0, particleGeom.NumParticles()));
GL_CHECK(glDisable(GL_RASTERIZER_DISCARD));
GL_CHECK(glEndTransformFeedback());
glUseProgram(GL_NONE);
particleGeom.Switch(!particleGeom.Switch());
}
// Draw
{
m_shader.BindPerPass();
glEnable(GL_BLEND);
glBlendEquation(GL_FUNC_ADD);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glEnable(GL_DEPTH_TEST);
glDepthMask(GL_FALSE);
glPointSize(1.0f);
RenderParams::SetModelMatrix(node->transform->matrix);
GLuint vertexArray = particleGeom.Switch() ? particleGeom.VertexArrayA() : particleGeom.VertexArrayB();
GL_CHECK(glBindVertexArray(vertexArray));
m_shader.BindPerPass();
m_shader.VertexShader().SetUniform("u_mvpMatrix", RenderParams::ModelViewProjectionMatrix());
m_shader.VertexShader().SetUniform("u_lightDir", -glm::euclidean(vec2(material.lightAltitude, material.lightAzimuth)));
m_shader.VertexShader().SetUniform("u_lightIntensity", material.directLightIntensity);
m_shader.VertexShader().SetUniform("u_ambientLightIntensity", material.ambientLightIntensity);
//glEnable(GL_PROGRAM_POINT_SIZE);
GL_CHECK(glDrawArrays(GL_POINTS, 0, particleGeom.NumParticles()));
//glDisable(GL_PROGRAM_POINT_SIZE);
glBindVertexArray(GL_NONE);
glEnable(GL_DEPTH_TEST);
glDepthMask(GL_TRUE);
glDisable(GL_BLEND);
}
}
}
void CGEDebugger::UpdatePrimPreview(u32 op) {
const u32 prim_type = (op >> 16) & 0xFF;
int count = op & 0xFFFF;
if (prim_type >= 7) {
ERROR_LOG(COMMON, "Unsupported prim type: %x", op);
return;
}
if (!gpuDebug) {
ERROR_LOG(COMMON, "Invalid debugging environment, shutting down?");
return;
}
if (count == 0) {
return;
}
const GEPrimitiveType prim = static_cast<GEPrimitiveType>(prim_type);
static std::vector<GPUDebugVertex> vertices;
static std::vector<u16> indices;
if (!gpuDebug->GetCurrentSimpleVertices(count, vertices, indices)) {
ERROR_LOG(COMMON, "Vertex preview not yet supported");
return;
}
if (prim == GE_PRIM_RECTANGLES) {
ExpandRectangles(vertices, indices, count, gpuDebug->GetGState().isModeThrough());
}
float fw, fh;
float x, y;
frameWindow->Begin();
frameWindow->GetContentSize(x, y, fw, fh);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glBlendEquation(GL_FUNC_ADD);
glBindTexture(GL_TEXTURE_2D, 0);
glViewport(x, y, fw, fh);
glScissor(x, y, fw, fh);
BindPreviewProgram(previewProgram);
float scale[] = {
480.0f / (float)PSP_CoreParameter().renderWidth,
272.0f / (float)PSP_CoreParameter().renderHeight,
};
Matrix4x4 ortho;
ortho.setOrtho(0, frameWindow->TexWidth() * scale[0], frameWindow->TexHeight() * scale[1], 0, -1, 1);
glUniformMatrix4fv(previewProgram->u_viewproj, 1, GL_FALSE, ortho.getReadPtr());
glEnableVertexAttribArray(previewProgram->a_position);
glVertexAttribPointer(previewProgram->a_position, 3, GL_FLOAT, GL_FALSE, sizeof(GPUDebugVertex), (float *)vertices.data() + 2);
if (indices.empty()) {
glDrawArrays(glprim[prim], 0, count);
} else {
glDrawElements(glprim[prim], count, GL_UNSIGNED_SHORT, indices.data());
}
frameWindow->End();
texWindow->Begin();
texWindow->GetContentSize(x, y, fw, fh);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glBlendEquation(GL_FUNC_ADD);
glBindTexture(GL_TEXTURE_2D, 0);
glViewport(x, y, fw, fh);
glScissor(x, y, fw, fh);
BindPreviewProgram(texPreviewProgram);
// TODO: Probably there's a better way and place to do this.
if (indices.empty()) {
for (int i = 0; i < count; ++i) {
vertices[i].u -= floor(vertices[i].u);
vertices[i].v -= floor(vertices[i].v);
}
} else {
for (int i = 0; i < count; ++i) {
vertices[indices[i]].u -= floor(vertices[indices[i]].u);
vertices[indices[i]].v -= floor(vertices[indices[i]].v);
}
}
ortho.setOrtho(0.0, 1.0, 1.0, 0.0, -1.0, 1.0);
glUniformMatrix4fv(texPreviewProgram->u_viewproj, 1, GL_FALSE, ortho.getReadPtr());
glEnableVertexAttribArray(texPreviewProgram->a_position);
glVertexAttribPointer(texPreviewProgram->a_position, 2, GL_FLOAT, GL_FALSE, sizeof(GPUDebugVertex), (float *)vertices.data());
if (indices.empty()) {
glDrawArrays(glprim[prim], 0, count);
} else {
glDrawElements(glprim[prim], count, GL_UNSIGNED_SHORT, indices.data());
}
texWindow->End();
}