void bind(GLenum face)
{
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, framebuffer.get_handle());
glFramebufferTexture2D(GL_DRAW_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, face, cubeMapHandle, 0);
glDrawBuffer(GL_COLOR_ATTACHMENT0);
gl_check_error(__FILE__, __LINE__);
}
void on_draw() override
{
glfwMakeContextCurrent(window);
glEnable(GL_CULL_FACE);
glEnable(GL_DEPTH_TEST);
int width, height;
glfwGetWindowSize(window, &width, &height);
glViewport(0, 0, width, height);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glClearColor(0.1f, 0.1f, 0.5f, 1.0f);
const auto proj = camera.get_projection_matrix((float) width / (float) height);
const float4x4 view = camera.get_view_matrix();
const float4x4 viewProj = mul(proj, view);
skydome.render(viewProj, camera.get_eye_point(), camera.farClip);
grid.render(proj, view);
gl_check_error(__FILE__, __LINE__);
glfwSwapBuffers(window);
frameCount++;
}
// Bind texture, preserve previous texture state
bool GnashTexture::bind()
{
TextureState * const ts = &_texture_state;
ts->old_texture = 0;
ts->was_bound = 0;
ts->was_enabled = glIsEnabled(GL_TEXTURE_2D);
if (!ts->was_enabled)
glEnable(GL_TEXTURE_2D);
else if (gl_get_param(GL_TEXTURE_BINDING_2D, &ts->old_texture))
ts->was_bound = _texture == ts->old_texture;
else
return false;
if (!ts->was_bound) {
gl_purge_errors();
glBindTexture(GL_TEXTURE_2D, _texture);
if (gl_check_error())
return false;
}
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
return true;
}
/**
the main engine loop.
the loop invokes fps counting, SDL event handling,
view translation, and calling the main draw_method.
*/
void loop() {
running = true;
SDL_Event e;
while (running) {
fpscounter->frame();
while (SDL_PollEvent(&e)) {
//call the input callback methods
for(auto cb: callbacks::on_input) {
if (!cb(&e)) {
break;
};
}
}
//call engine tick callback methods
for(auto cb: callbacks::on_engine_tick) {
cb();
}
//clear the framebuffer to black
//in the future, we might disable it for lazy drawing
glClearColor(0.0, 0.0, 0.0, 0.0);
glClear(GL_COLOR_BUFFER_BIT);
glPushMatrix(); {
//set the framebuffer up for camgame rendering
glTranslatef(camgame_window.x, camgame_window.y, 0);
//invoke all game drawing callback methods
for(auto cb: callbacks::on_drawgame) {
if (!cb()) {
break;
};
}
}
glPopMatrix();
glPushMatrix(); {
//the hud coordinate system is automatically established
//invoke all hud drawing callback methods
for(auto cb: callbacks::on_drawhud) {
if (!cb()) {
break;
};
}
}
glPopMatrix();
gl_check_error();
//the rendering is done
//swap the drawing buffers to actually show the frame
SDL_GL_SwapWindow(window);
}
}
// Release texture, restore previous texture state
void GnashTexture::release()
{
TextureState * const ts = &_texture_state;
if (!ts->was_bound && ts->old_texture)
glBindTexture(GL_TEXTURE_2D, ts->old_texture);
if (!ts->was_enabled)
glDisable(GL_TEXTURE_2D);
gl_check_error();
}
ExperimentalApp() : GLFWApp(600, 600, "Nearly Empty App")
{
int width, height;
glfwGetWindowSize(window, &width, &height);
glViewport(0, 0, width, height);
grid = RenderableGrid(1, 100, 100);
gl_check_error(__FILE__, __LINE__);
camera.look_at({0, 2.5, -2.5}, {0, 2.0, 0});
}
ExperimentalApp() : GLFWApp(940, 720, "GlCamera Sandbox App")
{
int width, height;
glfwGetWindowSize(window, &width, &height);
glViewport(0, 0, width, height);
cameraController.set_camera(&camera);
camera.look_at({0, 8, 24}, {0, 0, 0});
cameraZ = camera.pose.position.z;
simpleShader.reset(new GlShader(read_file_text("assets/shaders/simple_vert.glsl"), read_file_text("assets/shaders/simple_frag.glsl")));
{
lights.resize(2);
lights[0].color = float3(249.f / 255.f, 228.f / 255.f, 157.f / 255.f);
lights[0].pose.position = float3(25, 15, 0);
lights[1].color = float3(255.f / 255.f, 242.f / 255.f, 254.f / 255.f);
lights[1].pose.position = float3(-25, 15, 0);
}
{
cameraPositions.resize(2);
cameraPositions[0] = Renderable(make_frustum());
cameraPositions[0].pose.position = float3(0, 8, +24);
cameraPositions[0].mesh.set_non_indexed(GL_LINES);
cameraPositions[1] = Renderable(make_frustum());
cameraPositions[1].pose.position = float3(0, 8, -24);
cameraPositions[1].mesh.set_non_indexed(GL_LINES);
}
{
proceduralModels.resize(4);
proceduralModels[0] = Renderable(make_sphere(1.0));
proceduralModels[0].pose.position = float3(0, 2, +8);
proceduralModels[1] = Renderable(make_cube());
proceduralModels[1].pose.position = float3(0, 2, -8);
proceduralModels[2] = Renderable(make_icosahedron());
proceduralModels[2].pose.position = float3(8, 2, 0);
proceduralModels[3] = Renderable(make_octohedron());
proceduralModels[3].pose.position = float3(-8, 2, 0);
}
start = look_at_pose(float3(0, 8, +24), float3(-8, 2, 0));
end = look_at_pose(float3(0, 8, -24), float3(-8, 2, 0));
grid = RenderableGrid(1, 64, 64);
gl_check_error(__FILE__, __LINE__);
}
/// Release texture, restore previous texture state
static void unbind_texture(TextureState *ts)
{
if (!ts->was_bound && ts->old_texture) {
glBindTexture(ts->target, ts->old_texture);
}
if (!ts->was_enabled) {
glDisable(ts->target);
}
gl_check_error();
}
// glGetIntegerv() wrapper
static bool gl_get_param(GLenum param, unsigned int *pval)
{
GLint val;
gl_purge_errors();
glGetIntegerv(param, &val);
if (gl_check_error())
return false;
if (pval)
*pval = val;
return true;
}
void create(float2 resolution)
{
depthBuffer.load_data(resolution.x, resolution.y, GL_DEPTH_COMPONENT32, GL_DEPTH_COMPONENT, GL_FLOAT, nullptr);
framebuffer.attach(GL_DEPTH_ATTACHMENT, depthBuffer);
if (!framebuffer.check_complete()) throw std::runtime_error("incomplete framebuffer");
glGenTextures(1, &cubeMapHandle);
glBindTexture(GL_TEXTURE_CUBE_MAP, cubeMapHandle);
glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_BASE_LEVEL, 0);
glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MAX_LEVEL, 0);
glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_R, GL_CLAMP_TO_EDGE);
for (int i = 0; i < 6; ++i)
{
glTexImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_X + i, 0, GL_R16F, resolution.x, resolution.y, 0, GL_RED, GL_UNSIGNED_SHORT, nullptr);
}
glBindTexture(GL_TEXTURE_CUBE_MAP, 0);
struct CameraInfo
{
float3 position;
float3 target;
float3 up;
CameraInfo(float3 p, float3 t, float3 u) : position(p), target(t), up(u) {}
};
std::vector<CameraInfo> info = {
{{0, 0, 0}, { 1, 0, 0}, {0, -1, 0}},
{{0, 0, 0}, {-1, 0, 0}, {0, -1, 0}},
{{0, 0, 0}, { 0, 1, 0}, {0, 0, 1}},
{{0, 0, 0}, { 0, -1, 0}, {0, 0, -1}},
{{0, 0, 0}, { 0, 0, 1}, {0, -1, 0}},
{{0, 0, 0}, { 0, 0, -1}, {0, -1, 0}},
};
for (int i = 0; i < 6; ++i)
{
CubemapCamera cc;
cc.face = GL_TEXTURE_CUBE_MAP_POSITIVE_X + i;
cc.faceCamera.look_at(info[i].position, info[i].target, info[i].up);
faces.push_back(cc);
}
gl_check_error(__FILE__, __LINE__);
}
/**
* gl_get_texture_param:
* @target: the target to which the texture is bound
* @param: the parameter name
* @pval: return location for the value
*
* This function is a wrapper around glGetTexLevelParameteriv() that
* does extra error checking.
*
* Return value: %TRUE on success
*/
gboolean
gl_get_texture_param(GLenum target, GLenum param, guint *pval)
{
GLint val;
gl_purge_errors();
glGetTexLevelParameteriv(target, 0, param, &val);
if (gl_check_error())
return FALSE;
if (pval)
*pval = val;
return TRUE;
}
/**
* gl_get_param:
* @param: the parameter name
* @pval: return location for the value
*
* This function is a wrapper around glGetIntegerv() that does extra
* error checking.
*
* Return value: %TRUE on success
*/
gboolean
gl_get_param(GLenum param, guint *pval)
{
GLint val;
gl_purge_errors();
glGetIntegerv(param, &val);
if (gl_check_error())
return FALSE;
if (pval)
*pval = val;
return TRUE;
}
ExperimentalApp() : GLFWApp(1280, 800, "Glass Material App")
{
igm.reset(new gui::ImGuiManager(window));
gui::make_dark_theme();
//cubeTex = load_cubemap();
int width, height;
glfwGetWindowSize(window, &width, &height);
glViewport(0, 0, width, height);
// Debugging views for offscreen surfaces
uiSurface.bounds = {0, 0, (float) width, (float) height};
uiSurface.add_child( {{0.0000f, +10},{0, +10},{0.1667f, -10},{0.133f, +10}});
uiSurface.add_child( {{0.1667f, +10},{0, +10},{0.3334f, -10},{0.133f, +10}});
uiSurface.layout();
grid = RenderableGrid(1, 100, 100);
cameraController.set_camera(&camera);
camera.look_at({0, 2.5, -2.5}, {0, 2.0, 0});
lights[0] = {{0, 10, -10}, {0, 0, 1}};
lights[1] = {{0, 10, 10}, {0, 1, 0}};
Renderable reflectiveSphere = Renderable(make_sphere(2.f));
reflectiveSphere.pose = Pose(float4(0, 0, 0, 1), float3(0, 2, 0));
glassModels.push_back(std::move(reflectiveSphere));
Renderable debugAxis = Renderable(make_axis(), false, GL_LINES);
debugAxis.pose = Pose(float4(0, 0, 0, 1), float3(0, 1, 0));
regularModels.push_back(std::move(debugAxis));
Renderable cubeA = Renderable(make_cube());
cubeA.pose = Pose(make_rotation_quat_axis_angle({1, 0, 1}, ANVIL_PI / 3), float3(5, 0, 0));
regularModels.push_back(std::move(cubeA));
Renderable cubeB = Renderable(make_cube());
cubeB.pose = Pose(make_rotation_quat_axis_angle({1, 0, 1}, ANVIL_PI / 4), float3(-5, 0, 0));
regularModels.push_back(std::move(cubeB));
glassMaterialShader = make_watched_shader(shaderMonitor, "assets/shaders/glass_vert.glsl", "assets/shaders/glass_frag.glsl");
simpleShader = make_watched_shader(shaderMonitor, "assets/shaders/simple_vert.glsl", "assets/shaders/simple_frag.glsl");
cubeCamera.reset(new CubemapCamera({1024, 1024}));
gl_check_error(__FILE__, __LINE__);
}
/// Bind texture, preserve previous texture state
static bool bind_texture(TextureState *ts, GLenum target, GLuint texture)
{
ts->target = target;
ts->old_texture = 0;
ts->was_bound = 0;
ts->was_enabled = glIsEnabled(target);
GLenum texture_binding;
switch (target) {
case GL_TEXTURE_1D:
texture_binding = GL_TEXTURE_BINDING_1D;
break;
case GL_TEXTURE_2D:
texture_binding = GL_TEXTURE_BINDING_2D;
break;
case GL_TEXTURE_3D:
texture_binding = GL_TEXTURE_BINDING_3D;
break;
case GL_TEXTURE_RECTANGLE_ARB:
texture_binding = GL_TEXTURE_BINDING_RECTANGLE_ARB;
break;
default:
assert(!target);
return false;
}
if (!ts->was_enabled) {
glEnable(target);
} else if (gl_get_param(texture_binding, &ts->old_texture)) {
ts->was_bound = texture == ts->old_texture;
} else {
return false;
}
if (!ts->was_bound) {
gl_purge_errors();
glBindTexture(target, texture);
if (gl_check_error()) {
return false;
}
}
return true;
}
static gboolean gl_fbo_test_framebuffer( )
{
gboolean result = TRUE;
glGetError(); /* Clear error state just in case */
render_buffer_t buffer = gl_fbo_create_render_buffer( 640, 480, 0 );
gl_fbo_set_render_target(buffer);
GLint status = glCheckFramebufferStatus(GL_FRAMEBUFFER);
if( status != GL_FRAMEBUFFER_COMPLETE ) {
ERROR( "Framebuffer failure: %x", status );
result = FALSE;
}
if( result ) {
result = gl_check_error( "Setting up framebuffer" );
}
gl_fbo_destroy_render_buffer( buffer );
return result;
}
GLuint glsl_compile_link(const char *vprogram, const char *fprogram)
{
char log[32768];
GLuint vhandle, fhandle;
GLuint phandle;
phandle = glCreateProgram();
vhandle = glCreateShader(GL_VERTEX_SHADER);
fhandle = glCreateShader(GL_FRAGMENT_SHADER);
/* compile */
/* fragmemt */
glShaderSource(fhandle, 1, &fprogram, NULL);
glCompileShader(fhandle);
/* Print compile log */
glGetShaderInfoLog(fhandle,32768,NULL,log);
printf("Compile Log: %s\n", log);
/* vertex */
glShaderSource(vhandle, 1, &vprogram, NULL);
glCompileShader(vhandle);
/* Print compile log */
glGetShaderInfoLog(vhandle,32768,NULL,log);
printf("Compile Log: %s\n", log);
/* attach and link */
glAttachShader(phandle, vhandle);
glAttachShader(phandle, fhandle);
glLinkProgram(phandle);
printf("Program compilation/link status: ");
gl_check_error();
glGetProgramInfoLog(phandle, 32768, NULL, (GLchar*)log);
if ( strlen(log) > 0 )
printf("Link Log: %s\n", log);
// mark shaders for deletion when program is deleted
glDeleteShader(vhandle);
glDeleteShader(fhandle);
return phandle;
}
void on_draw() override
{
glfwMakeContextCurrent(window);
if (igm) igm->begin_frame();
int width, height;
glfwGetWindowSize(window, &width, &height);
glViewport(0, 0, width, height);
glEnable(GL_DEPTH_TEST);
glEnable(GL_CULL_FACE);
glDepthMask(GL_TRUE);
float windowAspectRatio = (float) width / (float) height;
const auto proj = camera.get_projection_matrix(windowAspectRatio);
const float4x4 view = camera.get_view_matrix();
const float4x4 viewProj = mul(proj, view);
glClearColor(0.1f, 0.1f, 0.1f, 1.0f);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
skydome.render(viewProj, camera.get_eye_point(), camera.farClip);
float3 target = camera.pose.position;
////////////////////////////////////////////
// Directional Light Shadowmap Pass (sun) //
////////////////////////////////////////////
{
shadowFramebuffer.bind_to_draw();
shadowmapShader->bind();
glClear(GL_DEPTH_BUFFER_BIT);
glViewport(0, 0, shadowmapResolution, shadowmapResolution);
shadowmapShader->uniform("u_lightViewProj", sunLight->get_view_proj_matrix(target));
for (auto & object : sceneObjects)
{
if (object->castsShadow)
{
shadowmapShader->uniform("u_modelMatrix", object->get_model());
object->draw();
}
}
shadowmapShader->unbind();
shadowFramebuffer.unbind();
}
///////////////////////////////
// Spot Light Shadowmap Pass //
///////////////////////////////
{
for (int i = 0; i < spotLightFramebuffers.size(); ++i)
{
spotLightFramebuffers[i]->shadowFramebuffer.bind_to_draw();
shadowmapShader->bind();
glClear(GL_DEPTH_BUFFER_BIT);
glViewport(0, 0, shadowmapResolution, shadowmapResolution);
shadowmapShader->uniform("u_lightViewProj", spotLights[0]->get_view_proj_matrix()); // only take the first into account for debugging
for (auto & object : sceneObjects)
{
if (object->castsShadow)
{
shadowmapShader->uniform("u_modelMatrix", object->get_model());
object->draw();
}
}
shadowmapShader->unbind();
spotLightFramebuffers[i]->shadowFramebuffer.unbind();
}
}
////////////////////////////////
// Point Light Shadowmap Pass //
////////////////////////////////
{
glViewport(0, 0, shadowmapResolution, shadowmapResolution);
for (int i = 0; i < 6; ++i)
{
pointLightFramebuffer->bind(pointLightFramebuffer->faces[i].face);
pointLightShader->bind();
glClear(GL_DEPTH_BUFFER_BIT);
pointLightFramebuffer->faces[i].faceCamera.set_position(pointLight->position); // set position from light data to camera for shadow fbo
auto viewProj = mul(pointLightFramebuffer->get_projection(), pointLightFramebuffer->faces[i].faceCamera.get_view_matrix());
pointLightShader->uniform("u_lightWorldPosition", pointLight->position);
pointLightShader->uniform("u_lightViewProj", viewProj);
for (auto & object : sceneObjects)
{
if (object->castsShadow)
{
pointLightShader->uniform("u_modelMatrix", object->get_model());
object->draw();
}
}
pointLightShader->unbind();
pointLightFramebuffer->unbind();
}
}
// Blur applied to the directional light shadowmap only (others later)
{
shadowBlurFramebuffer.bind_to_draw();
glDrawBuffer(GL_COLOR_ATTACHMENT0);
gaussianBlurShader->bind();
// Configured for a 7x7
gaussianBlurShader->uniform("blurSize", 1.0f / shadowmapResolution);
gaussianBlurShader->uniform("sigma", blurSigma);
gaussianBlurShader->uniform("u_modelViewProj", Identity4x4);
// Horizontal
gaussianBlurShader->texture("s_blurTexure", 0, shadowDepthTexture);
gaussianBlurShader->uniform("numBlurPixelsPerSide", 3.0f);
gaussianBlurShader->uniform("blurMultiplyVec", float2(1.0f, 0.0f));
fullscreen_post_quad.draw_elements();
// Vertical
gaussianBlurShader->texture("s_blurTexure", 0, shadowBlurTexture);
gaussianBlurShader->uniform("numBlurPixelsPerSide", 3.0f);
gaussianBlurShader->uniform("blurMultiplyVec", float2(0.0f, 1.0f));
fullscreen_post_quad.draw_elements();
gaussianBlurShader->unbind();
shadowBlurFramebuffer.unbind();
}
{
glViewport(0, 0, width, height);
sceneShader->bind();
sceneShader->uniform("u_viewProj", viewProj);
sceneShader->uniform("u_eye", camera.get_eye_point());
sceneShader->uniform("u_directionalLight.color", sunLight->color);
sceneShader->uniform("u_directionalLight.direction", sunLight->direction);
sceneShader->uniform("u_dirLightViewProjectionMat", sunLight->get_view_proj_matrix(target));
int samplerIndex = 0;
sceneShader->uniform("u_shadowMapBias", 0.01f / shadowmapResolution); // fixme
sceneShader->uniform("u_shadowMapTexelSize", float2(1.0f / shadowmapResolution));
sceneShader->texture("s_directionalShadowMap", samplerIndex++, shadowBlurTexture);
sceneShader->uniform("u_spotLightViewProjectionMat[0]", spotLights[0]->get_view_proj_matrix());
sceneShader->uniform("u_spotLights[0].color", spotLights[0]->color);
sceneShader->uniform("u_spotLights[0].direction", spotLights[0]->direction);
sceneShader->uniform("u_spotLights[0].position", spotLights[0]->position);
sceneShader->uniform("u_spotLights[0].cutoff", spotLights[0]->get_cutoff());
sceneShader->uniform("u_spotLights[0].constantAtten", spotLights[0]->attenuation.x);
sceneShader->uniform("u_spotLights[0].linearAtten", spotLights[0]->attenuation.y);
sceneShader->uniform("u_spotLights[0].quadraticAtten", spotLights[0]->attenuation.z);
sceneShader->uniform("u_pointLights[0].color", pointLight->color);
sceneShader->uniform("u_pointLights[0].position", pointLight->position);
sceneShader->uniform("u_pointLights[0].constantAtten", pointLight->attenuation.x);
sceneShader->uniform("u_pointLights[0].linearAtten", pointLight->attenuation.y);
sceneShader->uniform("u_pointLights[0].quadraticAtten", pointLight->attenuation.z);
// Update the spotlight 2D sampler
for (int i = 0; i < spotLightFramebuffers.size(); ++i)
{
auto & fbo = spotLightFramebuffers[i];
std::string uniformLocation = "s_spotLightShadowMap[" + std::to_string(i) + "]";
sceneShader->texture(uniformLocation.c_str(), samplerIndex + i, fbo->shadowDepthTexture);
}
// Update the pointlight cube sampler
for (int i = 0; i < 6; i++)
sceneShader->texture("s_pointLightCubemap[0]", 2 + i, pointLightFramebuffer->cubeMapHandle, GL_TEXTURE_CUBE_MAP);
for (auto & object : sceneObjects)
{
sceneShader->uniform("u_modelMatrix", object->get_model());
sceneShader->uniform("u_modelMatrixIT", inv(transpose(object->get_model())));
object->draw();
gl_check_error(__FILE__, __LINE__);
}
sceneShader->unbind();
}
{
ImGui::Separator();
ImGui::SliderFloat("Near Clip", &camera.nearClip, 0.1f, 2.0f);
ImGui::SliderFloat("Far Clip", &camera.farClip, 2.0f, 75.0f);
ImGui::DragFloat3("Light Direction", &sunLight->direction[0], 0.1f, -1.0f, 1.0f);
ImGui::Separator();
ImGui::SliderFloat("Blur Sigma", &blurSigma, 0.05f, 9.0f);
ImGui::Separator();
ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
}
viewA->draw(uiSurface.children[0]->bounds, int2(width, height));
viewB->draw(uiSurface.children[1]->bounds, int2(width, height));
viewC->draw(uiSurface.children[2]->bounds, int2(width, height));
viewD->draw(uiSurface.children[3]->bounds, int2(width, height));
gl_check_error(__FILE__, __LINE__);
if (igm) igm->end_frame();
glfwSwapBuffers(window);
}
void on_draw() override
{
glfwMakeContextCurrent(window);
if (igm) igm->begin_frame();
glEnable(GL_CULL_FACE);
glEnable(GL_DEPTH_TEST);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
int width, height;
glfwGetWindowSize(window, &width, &height);
glViewport(0, 0, width, height);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glClearColor(1.0f, 0.1f, 0.0f, 1.0f);
const auto proj = camera.get_projection_matrix((float) width / (float) height);
const float4x4 view = camera.get_view_matrix();
const float4x4 viewProj = mul(proj, view);
if (ImGui::SliderInt("Sun Theta", &sunPos.x, 0, 90)) skydome.set_sun_position(sunPos.x, sunPos.y);
if (ImGui::SliderInt("Sun Phi", &sunPos.y, 0, 360)) skydome.set_sun_position(sunPos.x, sunPos.y);
auto draw_cubes = [&](float3 eye, float4x4 vp)
{
simpleShader->bind();
simpleShader->uniform("u_eye", eye);
simpleShader->uniform("u_viewProj", vp);
simpleShader->uniform("u_emissive", float3(0, 0, 0));
simpleShader->uniform("u_diffuse", float3(0.33f, 0.33f, 0.33f));
for (int i = 0; i < 2; i++)
{
simpleShader->uniform("u_lights[" + std::to_string(i) + "].position", lights[i].position);
simpleShader->uniform("u_lights[" + std::to_string(i) + "].color", lights[i].color);
}
for (const auto & model : regularModels)
{
simpleShader->uniform("u_modelMatrix", model.get_model());
simpleShader->uniform("u_modelMatrixIT", inv(transpose(model.get_model())));
model.draw();
}
simpleShader->unbind();
};
// Render/Update cube camera
cubeCamera->render = [&](float3 eyePosition, float4x4 viewMatrix, float4x4 projMatrix)
{
skydome.render(mul(projMatrix, viewMatrix), eyePosition, camera.farClip);
draw_cubes(eyePosition, mul(projMatrix, viewMatrix));
};
cubeCamera->update(camera.get_eye_point()); // render from a camera positioned @ {0, 0, 0}
glViewport(0, 0, width, height);
skydome.render(viewProj, camera.get_eye_point(), camera.farClip);
grid.render(proj, view);
draw_cubes(camera.get_eye_point(), viewProj);
// Glass material
{
glassMaterialShader->bind();
glassMaterialShader->uniform("u_eye", camera.get_eye_point());
glassMaterialShader->uniform("u_viewProj", viewProj);
// Can set from either a pre-loaded cubemap, or one capured from the cubeCamera
glassMaterialShader->texture("u_cubemapTex", 0, cubeCamera->get_cubemap_handle(), GL_TEXTURE_CUBE_MAP); // cubeTex.get_gl_handle()
for (const auto & model : glassModels)
{
glassMaterialShader->uniform("u_modelMatrix", model.get_model());
glassMaterialShader->uniform("u_modelMatrixIT", inv(transpose(model.get_model())));
model.draw();
}
glassMaterialShader->unbind();
glDisable(GL_BLEND);
}
gl_check_error(__FILE__, __LINE__);
if (igm) igm->end_frame();
glfwSwapBuffers(window);
frameCount++;
}
static void *gl_glsl_init(void *data, const char *path)
{
unsigned i;
struct shader_program_info shader_prog_info;
bool shader_support = false;
#ifdef GLSL_DEBUG
char *error_string = NULL;
#endif
config_file_t *conf = NULL;
const char *stock_vertex = NULL;
const char *stock_fragment = NULL;
glsl_shader_data_t *glsl = (glsl_shader_data_t*)
calloc(1, sizeof(glsl_shader_data_t));
if (!glsl)
return NULL;
(void)shader_support;
#ifndef HAVE_OPENGLES
RARCH_LOG("[GLSL]: Checking GLSL shader support ...\n");
shader_support = glCreateProgram && glUseProgram && glCreateShader
&& glDeleteShader && glShaderSource && glCompileShader && glAttachShader
&& glDetachShader && glLinkProgram && glGetUniformLocation
&& glUniform1i && glUniform1f && glUniform2fv && glUniform4fv
&& glUniformMatrix4fv
&& glGetShaderiv && glGetShaderInfoLog && glGetProgramiv
&& glGetProgramInfoLog
&& glDeleteProgram && glGetAttachedShaders
&& glGetAttribLocation && glEnableVertexAttribArray
&& glDisableVertexAttribArray
&& glVertexAttribPointer
&& glGenBuffers && glBufferData && glDeleteBuffers && glBindBuffer;
if (!shader_support)
{
RARCH_ERR("GLSL shaders aren't supported by your OpenGL driver.\n");
goto error;
}
#endif
glsl->shader = (struct video_shader*)calloc(1, sizeof(*glsl->shader));
if (!glsl->shader)
goto error;
if (!string_is_empty(path))
{
bool ret = false;
const char *path_ext = path_get_extension(path);
if (string_is_equal_fast(path_ext, "glslp", 5))
{
conf = config_file_new(path);
if (conf)
{
ret = video_shader_read_conf_cgp(conf, glsl->shader);
glsl->shader->modern = true;
}
}
else if (string_is_equal_fast(path_ext, "glsl", 4))
{
strlcpy(glsl->shader->pass[0].source.path, path,
sizeof(glsl->shader->pass[0].source.path));
glsl->shader->passes = 1;
glsl->shader->modern = true;
ret = true;
}
if (!ret)
{
RARCH_ERR("[GL]: Failed to parse GLSL shader.\n");
goto error;
}
}
else
{
RARCH_WARN("[GL]: Stock GLSL shaders will be used.\n");
glsl->shader->passes = 1;
glsl->shader->pass[0].source.string.vertex =
strdup(glsl_core ? stock_vertex_core : stock_vertex_modern);
glsl->shader->pass[0].source.string.fragment =
strdup(glsl_core ? stock_fragment_core : stock_fragment_modern);
glsl->shader->modern = true;
}
if (!string_is_empty(path))
video_shader_resolve_relative(glsl->shader, path);
video_shader_resolve_parameters(conf, glsl->shader);
if (conf)
{
config_file_free(conf);
conf = NULL;
}
stock_vertex = (glsl->shader->modern) ?
stock_vertex_modern : stock_vertex_legacy;
stock_fragment = (glsl->shader->modern) ?
stock_fragment_modern : stock_fragment_legacy;
if (glsl_core)
{
stock_vertex = stock_vertex_core;
stock_fragment = stock_fragment_core;
}
#ifdef HAVE_OPENGLES
if (!glsl->shader->modern)
{
RARCH_ERR("[GL]: GLES context is used, but shader is not modern. Cannot use it.\n");
goto error;
}
#else
if (glsl_core && !glsl->shader->modern)
{
RARCH_ERR("[GL]: GL core context is used, but shader is not core compatible. Cannot use it.\n");
goto error;
}
#endif
/* Find all aliases we use in our GLSLP and add #defines for them so
* that a shader can choose a fallback if we are not using a preset. */
*glsl->alias_define = '\0';
for (i = 0; i < glsl->shader->passes; i++)
{
if (*glsl->shader->pass[i].alias)
{
char define[128];
define[0] = '\0';
snprintf(define, sizeof(define), "#define %s_ALIAS\n",
glsl->shader->pass[i].alias);
strlcat(glsl->alias_define, define, sizeof(glsl->alias_define));
}
}
shader_prog_info.vertex = stock_vertex;
shader_prog_info.fragment = stock_fragment;
shader_prog_info.is_file = false;
if (!gl_glsl_compile_program(glsl, 0, &glsl->prg[0], &shader_prog_info))
{
RARCH_ERR("GLSL stock programs failed to compile.\n");
goto error;
}
if (!gl_glsl_compile_programs(glsl, &glsl->prg[1]))
goto error;
if (!gl_load_luts(glsl->shader, glsl->lut_textures))
{
RARCH_ERR("[GL]: Failed to load LUTs.\n");
goto error;
}
for (i = 0; i <= glsl->shader->passes; i++)
gl_glsl_find_uniforms(glsl, i, glsl->prg[i].id, &glsl->uniforms[i]);
#ifdef GLSL_DEBUG
if (!gl_check_error(&error_string))
{
RARCH_ERR("%s\n", error_string);
free(error_string);
RARCH_WARN("Detected GL error in GLSL.\n");
}
#endif
if (glsl->shader->variables)
{
retro_ctx_memory_info_t mem_info;
struct state_tracker_info info;
mem_info.id = RETRO_MEMORY_SYSTEM_RAM;
core_get_memory(&mem_info);
info.wram = (uint8_t*)mem_info.data;
info.info = glsl->shader->variable;
info.info_elem = glsl->shader->variables;
info.script = NULL;
info.script_class = NULL;
#ifdef HAVE_PYTHON
info.script = glsl->shader->script;
if (*glsl->shader->script_class)
info.script_class= glsl->shader->script_class;
#endif
info.script_is_file = NULL;
glsl->state_tracker = state_tracker_init(&info);
if (!glsl->state_tracker)
RARCH_WARN("Failed to init state tracker.\n");
}
glsl->prg[glsl->shader->passes + 1] = glsl->prg[0];
glsl->uniforms[glsl->shader->passes + 1] = glsl->uniforms[0];
if (glsl->shader->modern)
{
shader_prog_info.vertex =
glsl_core ?
stock_vertex_core_blend : stock_vertex_modern_blend;
shader_prog_info.fragment =
glsl_core ?
stock_fragment_core_blend : stock_fragment_modern_blend;
shader_prog_info.is_file = false;
gl_glsl_compile_program(
glsl,
VIDEO_SHADER_STOCK_BLEND,
&glsl->prg[VIDEO_SHADER_STOCK_BLEND],
&shader_prog_info
);
gl_glsl_find_uniforms(glsl, 0, glsl->prg[VIDEO_SHADER_STOCK_BLEND].id,
&glsl->uniforms[VIDEO_SHADER_STOCK_BLEND]);
}
else
{
glsl->prg[VIDEO_SHADER_STOCK_BLEND] = glsl->prg[0];
glsl->uniforms[VIDEO_SHADER_STOCK_BLEND] = glsl->uniforms[0];
}
#ifdef HAVE_SHADERPIPELINE
#ifdef HAVE_OPENGLES
if (gl_query_extension("GL_OES_standard_derivatives"))
{
shader_prog_info.vertex = glsl_core ? stock_vertex_xmb_ribbon_modern : stock_vertex_xmb_ribbon_legacy;
shader_prog_info.fragment = stock_fragment_xmb;
}
else
{
shader_prog_info.vertex = stock_vertex_xmb_ribbon_simple_legacy;
shader_prog_info.fragment = stock_fragment_xmb_ribbon_simple;
}
#else
shader_prog_info.vertex = glsl_core ? stock_vertex_xmb_ribbon_modern : stock_vertex_xmb_ribbon_legacy;
shader_prog_info.fragment = stock_fragment_xmb;
#endif
shader_prog_info.is_file = false;
gl_glsl_compile_program(
glsl,
VIDEO_SHADER_MENU,
&glsl->prg[VIDEO_SHADER_MENU],
&shader_prog_info);
gl_glsl_find_uniforms(glsl, 0, glsl->prg[VIDEO_SHADER_MENU].id,
&glsl->uniforms[VIDEO_SHADER_MENU]);
shader_prog_info.vertex = glsl_core ? stock_vertex_xmb_simple_modern : stock_vertex_xmb_ribbon_simple_legacy;
shader_prog_info.fragment = stock_fragment_xmb_ribbon_simple;
gl_glsl_compile_program(
glsl,
VIDEO_SHADER_MENU_2,
&glsl->prg[VIDEO_SHADER_MENU_2],
&shader_prog_info);
gl_glsl_find_uniforms(glsl, 0, glsl->prg[VIDEO_SHADER_MENU_2].id,
&glsl->uniforms[VIDEO_SHADER_MENU_2]);
#if defined(HAVE_OPENGLES)
shader_prog_info.vertex = stock_vertex_xmb_snow_modern;
#else
shader_prog_info.vertex = glsl_core ? stock_vertex_xmb_snow_modern : stock_vertex_xmb_snow_legacy;
#endif
shader_prog_info.fragment = stock_fragment_xmb_simple_snow;
gl_glsl_compile_program(
glsl,
VIDEO_SHADER_MENU_3,
&glsl->prg[VIDEO_SHADER_MENU_3],
&shader_prog_info);
gl_glsl_find_uniforms(glsl, 0, glsl->prg[VIDEO_SHADER_MENU_3].id,
&glsl->uniforms[VIDEO_SHADER_MENU_3]);
#if defined(HAVE_OPENGLES)
shader_prog_info.vertex = stock_vertex_xmb_snow_modern;
#else
shader_prog_info.vertex = glsl_core ? stock_vertex_xmb_snow_modern : stock_vertex_xmb_snow_legacy;
#endif
shader_prog_info.fragment = stock_fragment_xmb_snow;
gl_glsl_compile_program(
glsl,
VIDEO_SHADER_MENU_4,
&glsl->prg[VIDEO_SHADER_MENU_4],
&shader_prog_info);
gl_glsl_find_uniforms(glsl, 0, glsl->prg[VIDEO_SHADER_MENU_4].id,
&glsl->uniforms[VIDEO_SHADER_MENU_4]);
#if defined(HAVE_OPENGLES)
shader_prog_info.vertex = stock_vertex_xmb_snow_modern;
#else
shader_prog_info.vertex = glsl_core ? stock_vertex_xmb_snow_modern : stock_vertex_xmb_snow_legacy;
#endif
shader_prog_info.fragment = stock_fragment_xmb_bokeh;
gl_glsl_compile_program(
glsl,
VIDEO_SHADER_MENU_5,
&glsl->prg[VIDEO_SHADER_MENU_5],
&shader_prog_info);
gl_glsl_find_uniforms(glsl, 0, glsl->prg[VIDEO_SHADER_MENU_5].id,
&glsl->uniforms[VIDEO_SHADER_MENU_5]);
#endif
gl_glsl_reset_attrib(glsl);
for (i = 0; i < GFX_MAX_SHADERS; i++)
{
glGenBuffers(1, &glsl->vbo[i].vbo_primary);
glGenBuffers(1, &glsl->vbo[i].vbo_secondary);
}
return glsl;
error:
gl_glsl_destroy_resources(glsl);
if (conf)
config_file_free(conf);
if (glsl)
free(glsl);
return NULL;
}
bool gl_glsl_init(const char *path)
{
#if !defined(HAVE_OPENGLES2) && !defined(HAVE_OPENGL_MODERN) && !defined(__APPLE__)
// Load shader functions.
LOAD_GL_SYM(CreateProgram);
LOAD_GL_SYM(UseProgram);
LOAD_GL_SYM(CreateShader);
LOAD_GL_SYM(DeleteShader);
LOAD_GL_SYM(ShaderSource);
LOAD_GL_SYM(CompileShader);
LOAD_GL_SYM(AttachShader);
LOAD_GL_SYM(DetachShader);
LOAD_GL_SYM(LinkProgram);
LOAD_GL_SYM(GetUniformLocation);
LOAD_GL_SYM(Uniform1i);
LOAD_GL_SYM(Uniform1f);
LOAD_GL_SYM(Uniform2fv);
LOAD_GL_SYM(Uniform4fv);
LOAD_GL_SYM(UniformMatrix4fv);
LOAD_GL_SYM(GetShaderiv);
LOAD_GL_SYM(GetShaderInfoLog);
LOAD_GL_SYM(GetProgramiv);
LOAD_GL_SYM(GetProgramInfoLog);
LOAD_GL_SYM(DeleteProgram);
LOAD_GL_SYM(GetAttachedShaders);
LOAD_GL_SYM(GetAttribLocation);
LOAD_GL_SYM(EnableVertexAttribArray);
LOAD_GL_SYM(DisableVertexAttribArray);
LOAD_GL_SYM(VertexAttribPointer);
RARCH_LOG("Checking GLSL shader support ...\n");
bool shader_support = pglCreateProgram && pglUseProgram && pglCreateShader
&& pglDeleteShader && pglShaderSource && pglCompileShader && pglAttachShader
&& pglDetachShader && pglLinkProgram && pglGetUniformLocation
&& pglUniform1i && pglUniform1f && pglUniform2fv && pglUniform4fv && pglUniformMatrix4fv
&& pglGetShaderiv && pglGetShaderInfoLog && pglGetProgramiv && pglGetProgramInfoLog
&& pglDeleteProgram && pglGetAttachedShaders
&& pglGetAttribLocation && pglEnableVertexAttribArray && pglDisableVertexAttribArray
&& pglVertexAttribPointer;
if (!shader_support)
{
RARCH_ERR("GLSL shaders aren't supported by your OpenGL driver.\n");
return false;
}
#endif
unsigned num_progs = 0;
struct shader_program progs[RARCH_GLSL_MAX_SHADERS] = {{0}};
if (path)
{
num_progs = get_xml_shaders(path, progs, RARCH_GLSL_MAX_SHADERS - 1);
if (num_progs == 0)
{
RARCH_ERR("Couldn't find any valid shaders in XML file.\n");
return false;
}
}
else
{
RARCH_WARN("[GL]: Stock GLSL shaders will be used.\n");
num_progs = 1;
progs[0].vertex = strdup(stock_vertex_modern);
progs[0].fragment = strdup(stock_fragment_modern);
glsl_modern = true;
}
#ifdef HAVE_OPENGLES2
if (!glsl_modern)
{
RARCH_ERR("[GL]: GLES context is used, but shader is not modern. Cannot use it.\n");
return false;
}
#endif
struct shader_program stock_prog = {0};
stock_prog.vertex = strdup(glsl_modern ? stock_vertex_modern : stock_vertex_legacy);
stock_prog.fragment = strdup(glsl_modern ? stock_fragment_modern : stock_fragment_legacy);
if (!compile_programs(&gl_program[0], &stock_prog, 1))
{
RARCH_ERR("GLSL stock programs failed to compile.\n");
return false;
}
for (unsigned i = 0; i < num_progs; i++)
{
gl_filter_type[i + 1] = progs[i].filter;
gl_scale[i + 1].type_x = progs[i].type_x;
gl_scale[i + 1].type_y = progs[i].type_y;
gl_scale[i + 1].scale_x = progs[i].scale_x;
gl_scale[i + 1].scale_y = progs[i].scale_y;
gl_scale[i + 1].abs_x = progs[i].abs_x;
gl_scale[i + 1].abs_y = progs[i].abs_y;
gl_scale[i + 1].valid = progs[i].valid_scale;
}
if (!compile_programs(&gl_program[1], progs, num_progs))
return false;
// RetroArch custom two-pass with two different files.
if (num_progs == 1 && *g_settings.video.second_pass_shader && g_settings.video.render_to_texture)
{
unsigned secondary_progs = get_xml_shaders(g_settings.video.second_pass_shader, progs, 1);
if (secondary_progs == 1)
{
if (!compile_programs(&gl_program[2], progs, 1))
{
RARCH_ERR("Failed to compile second pass shader.\n");
return false;
}
num_progs++;
}
else
{
RARCH_ERR("Did not find exactly one valid shader in secondary shader file.\n");
return false;
}
}
for (unsigned i = 0; i <= num_progs; i++)
find_uniforms(gl_program[i], &gl_uniforms[i]);
#ifdef GLSL_DEBUG
if (!gl_check_error())
RARCH_WARN("Detected GL error in GLSL.\n");
#endif
if (gl_tracker_info_cnt > 0)
{
struct state_tracker_info info = {0};
info.wram = (uint8_t*)pretro_get_memory_data(RETRO_MEMORY_SYSTEM_RAM);
info.info = gl_tracker_info;
info.info_elem = gl_tracker_info_cnt;
#ifdef HAVE_PYTHON
info.script = gl_script_program;
info.script_class = *gl_tracker_script_class ? gl_tracker_script_class : NULL;
info.script_is_file = false;
#endif
gl_state_tracker = state_tracker_init(&info);
if (!gl_state_tracker)
RARCH_WARN("Failed to init state tracker.\n");
}
glsl_enable = true;
gl_num_programs = num_progs;
gl_program[gl_num_programs + 1] = gl_program[0];
gl_uniforms[gl_num_programs + 1] = gl_uniforms[0];
gl_glsl_reset_attrib();
return true;
}
static void *gl_init(const video_info_t *video, const input_driver_t **input, void **input_data)
{
#ifdef _WIN32
gfx_set_dwm();
#endif
#ifdef RARCH_CONSOLE
if (driver.video_data)
return driver.video_data;
#endif
gl_t *gl = (gl_t*)calloc(1, sizeof(gl_t));
if (!gl)
return NULL;
if (!gfx_ctx_init())
{
free(gl);
return NULL;
}
unsigned full_x = 0, full_y = 0;
gfx_ctx_get_video_size(&full_x, &full_y);
RARCH_LOG("Detecting resolution %ux%u.\n", full_x, full_y);
gfx_ctx_set_swap_interval(video->vsync ? 1 : 0, false);
unsigned win_width = video->width;
unsigned win_height = video->height;
if (video->fullscreen && (win_width == 0) && (win_height == 0))
{
win_width = full_x;
win_height = full_y;
}
if (!gfx_ctx_set_video_mode(win_width, win_height,
g_settings.video.force_16bit ? 15 : 0, video->fullscreen))
{
free(gl);
return NULL;
}
#ifndef RARCH_CONSOLE
gfx_ctx_update_window_title(true);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
#endif
#if (defined(HAVE_XML) || defined(HAVE_CG)) && defined(_WIN32)
// Win32 GL lib doesn't have some functions needed for XML shaders.
// Need to load dynamically :(
if (!load_gl_proc())
{
gfx_ctx_destroy();
free(gl);
return NULL;
}
#endif
gl->vsync = video->vsync;
gl->fullscreen = video->fullscreen;
gl->full_x = full_x;
gl->full_y = full_y;
gl->win_width = win_width;
gl->win_height = win_height;
RARCH_LOG("GL: Using resolution %ux%u\n", gl->win_width, gl->win_height);
#if defined(HAVE_CG_MENU) && defined(RARCH_CONSOLE)
RARCH_LOG("Initializing menu shader ...\n");
gl_cg_set_menu_shader(default_paths.menu_shader_file);
#endif
if (!gl_shader_init())
{
RARCH_ERR("Shader init failed.\n");
gfx_ctx_destroy();
free(gl);
return NULL;
}
RARCH_LOG("GL: Loaded %u program(s).\n", gl_shader_num());
#ifdef HAVE_FBO
// Set up render to texture.
gl_init_fbo(gl, RARCH_SCALE_BASE * video->input_scale,
RARCH_SCALE_BASE * video->input_scale);
#endif
gl->keep_aspect = video->force_aspect;
// Apparently need to set viewport for passes when we aren't using FBOs.
gl_shader_use(0);
gl_set_viewport(gl, gl->win_width, gl->win_height, false, true);
gl_shader_use(1);
gl_set_viewport(gl, gl->win_width, gl->win_height, false, true);
bool force_smooth = false;
if (gl_shader_filter_type(1, &force_smooth))
gl->tex_filter = force_smooth ? GL_LINEAR : GL_NEAREST;
else
gl->tex_filter = video->smooth ? GL_LINEAR : GL_NEAREST;
gl->texture_type = RARCH_GL_TEXTURE_TYPE;
gl->texture_fmt = video->rgb32 ? RARCH_GL_FORMAT32 : RARCH_GL_FORMAT16;
gl->base_size = video->rgb32 ? sizeof(uint32_t) : sizeof(uint16_t);
glEnable(GL_TEXTURE_2D);
glDisable(GL_DEPTH_TEST);
glDisable(GL_DITHER);
glClearColor(0, 0, 0, 1);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
glEnableClientState(GL_VERTEX_ARRAY);
glEnableClientState(GL_TEXTURE_COORD_ARRAY);
glEnableClientState(GL_COLOR_ARRAY);
glVertexPointer(2, GL_FLOAT, 0, vertex_ptr);
memcpy(gl->tex_coords, tex_coords, sizeof(tex_coords));
glTexCoordPointer(2, GL_FLOAT, 0, gl->tex_coords);
glColorPointer(4, GL_FLOAT, 0, white_color);
set_lut_texture_coords(tex_coords);
gl->tex_w = RARCH_SCALE_BASE * video->input_scale;
gl->tex_h = RARCH_SCALE_BASE * video->input_scale;
#ifdef HAVE_OPENGL_TEXREF
glGenBuffers(1, &gl->pbo);
glBindBuffer(GL_TEXTURE_REFERENCE_BUFFER_SCE, gl->pbo);
glBufferData(GL_TEXTURE_REFERENCE_BUFFER_SCE,
gl->tex_w * gl->tex_h * gl->base_size * TEXTURES, NULL, GL_STREAM_DRAW);
#endif
// Empty buffer that we use to clear out the texture with on res change.
gl->empty_buf = calloc(gl->tex_w * gl->tex_h, gl->base_size);
gl_init_textures(gl);
for (unsigned i = 0; i < TEXTURES; i++)
{
gl->last_width[i] = gl->tex_w;
gl->last_height[i] = gl->tex_h;
}
for (unsigned i = 0; i < TEXTURES; i++)
{
gl->prev_info[i].tex = gl->texture[(gl->tex_index - (i + 1)) & TEXTURES_MASK];
gl->prev_info[i].input_size[0] = gl->tex_w;
gl->prev_info[i].tex_size[0] = gl->tex_w;
gl->prev_info[i].input_size[1] = gl->tex_h;
gl->prev_info[i].tex_size[1] = gl->tex_h;
memcpy(gl->prev_info[i].coord, tex_coords, sizeof(tex_coords));
}
gfx_ctx_input_driver(input, input_data);
gl_init_font(gl, g_settings.video.font_path, g_settings.video.font_size);
if (!gl_check_error())
{
gfx_ctx_destroy();
free(gl);
return NULL;
}
return gl;
}
static bool gl_glsl_init(void *data, const char *path)
{
unsigned i;
config_file_t *conf = NULL;
glsl_shader_data_t *glsl = NULL;
const char *stock_vertex = NULL;
const char *stock_fragment = NULL;
driver_t *driver = driver_get_ptr();
(void)data;
glsl = (glsl_shader_data_t*)calloc(1, sizeof(glsl_shader_data_t));
if (!glsl)
return false;
#ifndef HAVE_OPENGLES2
RARCH_LOG("Checking GLSL shader support ...\n");
bool shader_support = glCreateProgram && glUseProgram && glCreateShader
&& glDeleteShader && glShaderSource && glCompileShader && glAttachShader
&& glDetachShader && glLinkProgram && glGetUniformLocation
&& glUniform1i && glUniform1f && glUniform2fv && glUniform4fv
&& glUniformMatrix4fv
&& glGetShaderiv && glGetShaderInfoLog && glGetProgramiv
&& glGetProgramInfoLog
&& glDeleteProgram && glGetAttachedShaders
&& glGetAttribLocation && glEnableVertexAttribArray
&& glDisableVertexAttribArray
&& glVertexAttribPointer
&& glGenBuffers && glBufferData && glDeleteBuffers && glBindBuffer;
if (!shader_support)
{
RARCH_ERR("GLSL shaders aren't supported by your OpenGL driver.\n");
free(glsl);
return false;
}
#endif
glsl->shader = (struct video_shader*)calloc(1, sizeof(*glsl->shader));
if (!glsl->shader)
{
free(glsl);
return false;
}
if (path)
{
bool ret;
const char *path_ext = path_get_extension(path);
if (!strcmp(path_ext, "glsl"))
{
strlcpy(glsl->shader->pass[0].source.path, path,
sizeof(glsl->shader->pass[0].source.path));
glsl->shader->passes = 1;
glsl->shader->modern = true;
ret = true;
}
else if (!strcmp(path_ext, "glslp"))
{
conf = config_file_new(path);
if (conf)
{
ret = video_shader_read_conf_cgp(conf, glsl->shader);
glsl->shader->modern = true;
}
else
ret = false;
}
else
ret = false;
if (!ret)
{
RARCH_ERR("[GL]: Failed to parse GLSL shader.\n");
free(glsl->shader);
free(glsl);
return false;
}
}
else
{
RARCH_WARN("[GL]: Stock GLSL shaders will be used.\n");
glsl->shader->passes = 1;
glsl->shader->pass[0].source.string.vertex =
strdup(glsl_core ? stock_vertex_core : stock_vertex_modern);
glsl->shader->pass[0].source.string.fragment =
strdup(glsl_core ? stock_fragment_core : stock_fragment_modern);
glsl->shader->modern = true;
}
video_shader_resolve_relative(glsl->shader, path);
video_shader_resolve_parameters(conf, glsl->shader);
if (conf)
{
config_file_free(conf);
conf = NULL;
}
stock_vertex = (glsl->shader->modern) ?
stock_vertex_modern : stock_vertex_legacy;
stock_fragment = (glsl->shader->modern) ?
stock_fragment_modern : stock_fragment_legacy;
if (glsl_core)
{
stock_vertex = stock_vertex_core;
stock_fragment = stock_fragment_core;
}
#ifdef HAVE_OPENGLES2
if (!glsl->shader->modern)
{
RARCH_ERR("[GL]: GLES context is used, but shader is not modern. Cannot use it.\n");
goto error;
}
#else
if (glsl_core && !glsl->shader->modern)
{
RARCH_ERR("[GL]: GL core context is used, but shader is not core compatible. Cannot use it.\n");
goto error;
}
#endif
/* Find all aliases we use in our GLSLP and add #defines for them so
* that a shader can choose a fallback if we are not using a preset. */
*glsl->glsl_alias_define = '\0';
for (i = 0; i < glsl->shader->passes; i++)
{
if (*glsl->shader->pass[i].alias)
{
char define[128] = {0};
snprintf(define, sizeof(define), "#define %s_ALIAS\n",
glsl->shader->pass[i].alias);
strlcat(glsl->glsl_alias_define, define, sizeof(glsl->glsl_alias_define));
}
}
if (!(glsl->gl_program[0] = compile_program(glsl, stock_vertex, stock_fragment, 0)))
{
RARCH_ERR("GLSL stock programs failed to compile.\n");
goto error;
}
if (!compile_programs(glsl, &glsl->gl_program[1]))
goto error;
if (!gl_load_luts(glsl->shader, glsl->gl_teximage))
{
RARCH_ERR("[GL]: Failed to load LUTs.\n");
goto error;
}
for (i = 0; i <= glsl->shader->passes; i++)
find_uniforms(glsl, i, glsl->gl_program[i], &glsl->gl_uniforms[i]);
#ifdef GLSL_DEBUG
if (!gl_check_error())
RARCH_WARN("Detected GL error in GLSL.\n");
#endif
if (glsl->shader->variables)
{
struct state_tracker_info info = {0};
info.wram = (uint8_t*)pretro_get_memory_data(RETRO_MEMORY_SYSTEM_RAM);
info.info = glsl->shader->variable;
info.info_elem = glsl->shader->variables;
#ifdef HAVE_PYTHON
info.script = glsl->shader->script;
info.script_class = *glsl->shader->script_class ?
glsl->shader->script_class : NULL;
#endif
glsl->gl_state_tracker = state_tracker_init(&info);
if (!glsl->gl_state_tracker)
RARCH_WARN("Failed to init state tracker.\n");
}
glsl->gl_program[glsl->shader->passes + 1] = glsl->gl_program[0];
glsl->gl_uniforms[glsl->shader->passes + 1] = glsl->gl_uniforms[0];
if (glsl->shader->modern)
{
glsl->gl_program[GL_SHADER_STOCK_BLEND] = compile_program(
glsl,
glsl_core ?
stock_vertex_core_blend : stock_vertex_modern_blend,
glsl_core ?
stock_fragment_core_blend : stock_fragment_modern_blend,
GL_SHADER_STOCK_BLEND);
find_uniforms(glsl, 0, glsl->gl_program[GL_SHADER_STOCK_BLEND],
&glsl->gl_uniforms[GL_SHADER_STOCK_BLEND]);
}
else
{
glsl->gl_program [GL_SHADER_STOCK_BLEND] = glsl->gl_program[0];
glsl->gl_uniforms[GL_SHADER_STOCK_BLEND] = glsl->gl_uniforms[0];
}
gl_glsl_reset_attrib(glsl);
for (i = 0; i < GFX_MAX_SHADERS; i++)
{
glGenBuffers(1, &glsl->glsl_vbo[i].vbo_primary);
glGenBuffers(1, &glsl->glsl_vbo[i].vbo_secondary);
}
driver->video_shader_data = glsl;
return true;
error:
gl_glsl_destroy_resources(glsl);
if (glsl)
free(glsl);
return false;
}
void on_draw() override
{
glfwMakeContextCurrent(window);
if (igm) igm->begin_frame();
glEnable(GL_CULL_FACE);
glEnable(GL_DEPTH_TEST);
int width, height;
glfwGetWindowSize(window, &width, &height);
glViewport(0, 0, width, height);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glClearColor(1.0f, 0.1f, 0.0f, 1.0f);
ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
ImGui::SliderFloat("Projectile Velocity", &turret.velocity, 0.f, 100.f);
if (ImGui::Button("Fire"))
{
turret.projectile = BallisticProjectile();
turret.projectile.p = turret.source.pose;
turret.projectile.lastPos = turret.source.pose.position;
turret.projectile.gravity = 0.0;
/*
float3 firingSolutionLow;
float3 firingSolutionHigh;
auto numSolutions = solve_ballistic_arc(turret.source.pose.position, turret.velocity, turret.target.pose.position, 9.8f, firingSolutionLow, firingSolutionHigh);
*/
float3 fireVelocity;
float gravity;
auto canFire = solve_ballistic_arc_lateral(turret.source.pose.position, turret.velocity, turret.target.pose.position, 10.f, fireVelocity, gravity);
//std::cout << "Num Solutions: " << numSolutions << std::endl;
//std::cout << "Low Solution: " << firingSolutionLow << std::endl;
std::cout << "Fire Velocity: " << fireVelocity << std::endl;
if (canFire)
{
turret.projectile.gravity = gravity;
turret.projectile.add_impulse(fireVelocity);
turret.fired = true;
}
}
ImGui::Spacing();
if (ImGui::SliderInt("M", &ssM, 1, 30)) regeneratePointer = true;
if (ImGui::SliderInt("N1", &ssN1, 1, 30)) regeneratePointer = true;
if (ImGui::SliderInt("N2", &ssN2, 1, 30)) regeneratePointer = true;
if (ImGui::SliderInt("N3", &ssN3, 1, 30)) regeneratePointer = true;
ImGui::Spacing();
ImGui::BeginGroup();
if (ImGui::SliderFloat3("Position", ¶ms.position.x, -5, 5))
parabolicPointer = make_parabolic_pointer(worldSurface, params);
if (ImGui::SliderFloat3("Velocity", ¶ms.velocity.x, -1.f, 1.f))
parabolicPointer = make_parabolic_pointer(worldSurface, params);
if (ImGui::SliderFloat("Point Spacing", ¶ms.pointSpacing, 0.5, 2.0))
parabolicPointer = make_parabolic_pointer(worldSurface, params);
if (ImGui::SliderFloat("Point Count", ¶ms.pointCount, 16, 64))
parabolicPointer = make_parabolic_pointer(worldSurface, params);
ImGui::EndGroup();
const auto proj = camera.get_projection_matrix((float) width / (float) height);
const float4x4 view = camera.get_view_matrix();
const float4x4 viewProj = mul(proj, view);
glViewport(0, 0, width, height);
skydome.render(viewProj, camera.get_eye_point(), camera.farClip);
grid.render(proj, view);
{
simpleShader->bind();
simpleShader->uniform("u_eye", camera.get_eye_point());
simpleShader->uniform("u_viewProj", viewProj);
simpleShader->uniform("u_emissive", float3(0, 0, 0));
simpleShader->uniform("u_diffuse", float3(0.0f, 1.0f, 0.0f));
for (int i = 0; i < 2; i++)
{
simpleShader->uniform("u_lights[" + std::to_string(i) + "].position", lights[i].position);
simpleShader->uniform("u_lights[" + std::to_string(i) + "].color", lights[i].color);
}
for (const auto & model : shadedModels)
{
simpleShader->uniform("u_modelMatrix", model.get_model());
simpleShader->uniform("u_modelMatrixIT", inv(transpose(model.get_model())));
model.draw();
}
{
simpleShader->uniform("u_modelMatrix", turret.source.get_model());
simpleShader->uniform("u_modelMatrixIT", inv(transpose(turret.source.get_model())));
turret.source.draw();
simpleShader->uniform("u_modelMatrix", turret.target.get_model());
simpleShader->uniform("u_modelMatrixIT", inv(transpose(turret.target.get_model())));
turret.target.draw();
auto projectileMat = turret.projectile.p.matrix();
simpleShader->uniform("u_modelMatrix", projectileMat);
simpleShader->uniform("u_modelMatrixIT", inv(transpose(projectileMat)));
turret.bullet.draw();
}
simpleShader->unbind();
}
{
normalDebugShader->bind();
normalDebugShader->uniform("u_viewProj", viewProj);
// Some debug models
for (const auto & model : debugModels)
{
normalDebugShader->uniform("u_modelMatrix", model.get_model());
normalDebugShader->uniform("u_modelMatrixIT", inv(transpose(model.get_model())));
model.draw();
}
// Supershape
{
normalDebugShader->uniform("u_modelMatrix", supershape.get_model());
normalDebugShader->uniform("u_modelMatrixIT", inv(transpose(supershape.get_model())));
supershape.draw();
}
// Parabolic pointer
{
normalDebugShader->uniform("u_modelMatrix", parabolicPointer.get_model());
normalDebugShader->uniform("u_modelMatrixIT", inv(transpose(parabolicPointer.get_model())));
parabolicPointer.draw();
}
// Parallel transport boxes
for (int i = 0; i < ptfBoxes.size(); ++i)
{
auto & model = ptfBoxes[i];
auto modelMat = ptf[i];
normalDebugShader->uniform("u_modelMatrix", mul(modelMat, make_scaling_matrix(0.01)));
normalDebugShader->uniform("u_modelMatrixIT", inv(transpose(modelMat)));
model.draw();
}
normalDebugShader->unbind();
}
gl_check_error(__FILE__, __LINE__);
if (igm) igm->end_frame();
glfwSwapBuffers(window);
frameCount++;
}
int gl_shader_check_error(GLhandleARB obj, GLenum obj_query, GLSLCheckMode m, const char *file, const int line)
{
GLsizei length;
GLcharARB buffer[255];
GLenum glerr;
GLint param;
int res=0;
glerr = gl_check_error(m, file, line);
if(!obj)
return glerr;
if(obj_query != GL_OBJECT_TYPE_ARB &&
obj_query != GL_OBJECT_DELETE_STATUS_ARB &&
obj_query != GL_OBJECT_COMPILE_STATUS_ARB &&
obj_query != GL_OBJECT_LINK_STATUS_ARB &&
obj_query != GL_OBJECT_VALIDATE_STATUS_ARB
)
{
osd_printf_warning("%s:%d: GL Error: gl_shader_check_error unsupported object query 0x%X\n", file, line, (unsigned int)obj_query);
return -1;
}
pfn_glGetObjectParameterivARB(obj, obj_query, ¶m);
switch(obj_query)
{
case GL_OBJECT_TYPE_ARB:
if( param!=GL_PROGRAM_OBJECT_ARB && param!=GL_SHADER_OBJECT_ARB )
{
if ( CHECK_VERBOSE <= m )
osd_printf_warning("%s:%d: GL Error: object type 0x%X generation failed\n", file, line, (unsigned int)(FPTR)obj);
res=-1;
} else if ( CHECK_ALWAYS_VERBOSE <= m )
{
if(param==GL_PROGRAM_OBJECT_ARB)
osd_printf_warning("%s:%d: GL Error: object type 0x%X is PROGRAM, successful\n", file, line, (unsigned int)(FPTR)obj);
else
osd_printf_warning("%s:%d: GL Info: object type 0x%X is SHADER, successful\n", file, line, (unsigned int)(FPTR)obj);
}
break;
case GL_OBJECT_DELETE_STATUS_ARB:
if(param!=1)
{
if ( CHECK_ALWAYS_VERBOSE <= m )
osd_printf_warning("%s:%d: GL Info: object 0x%X not yet marked for deletion\n", file, line, (unsigned int)(FPTR)obj);
} else if ( CHECK_ALWAYS_VERBOSE <= m )
{
osd_printf_warning("%s:%d: GL Info: object 0x%X deletion successful\n", file, line, (unsigned int)(FPTR)obj);
}
break;
case GL_OBJECT_COMPILE_STATUS_ARB:
if(param!=1)
{
if ( CHECK_VERBOSE <= m )
osd_printf_warning("%s:%d: GL Error: object 0x%X compilation failed\n", file, line, (unsigned int)(FPTR)obj);
res=-1;
} else if ( CHECK_ALWAYS_VERBOSE <= m )
{
osd_printf_warning("%s:%d: GL Info: object 0x%X compiled successful\n", file, line, (unsigned int)(FPTR)obj);
}
break;
case GL_OBJECT_LINK_STATUS_ARB:
if(param!=1)
{
if ( CHECK_VERBOSE <= m )
osd_printf_warning("%s:%d: GL Error: object 0x%X linking failed\n", file, line, (unsigned int)(FPTR)obj);
res=-1;
} else if ( CHECK_ALWAYS_VERBOSE <= m )
{
osd_printf_warning("%s:%d: GL Info: object 0x%X linked successful\n", file, line, (unsigned int)(FPTR)obj);
}
break;
case GL_OBJECT_VALIDATE_STATUS_ARB:
if(param!=1)
{
if ( CHECK_VERBOSE <= m )
osd_printf_warning("%s:%d: GL Error: object 0x%X validation failed\n", file, line, (unsigned int)(FPTR)obj);
res=-1;
} else if ( CHECK_ALWAYS_VERBOSE <= m )
{
osd_printf_warning("%s:%d: GL Info: object 0x%X validation successful\n", file, line, (unsigned int)(FPTR)obj);
}
break;
}
if ( res<0 || CHECK_ALWAYS_VERBOSE <= m )
{
length=0;
pfn_glGetInfoLogARB(obj, sizeof(buffer), &length, buffer);
if(length>0)
osd_printf_warning("%s:%d glInfoLog: %s\n", file, line, buffer);
}
(void) glGetError(); // ;-)
return res;
}
static bool gl_glsl_init(void *data, const char *path)
{
unsigned i;
(void)data;
#ifndef HAVE_OPENGLES2
RARCH_LOG("Checking GLSL shader support ...\n");
bool shader_support = glCreateProgram && glUseProgram && glCreateShader
&& glDeleteShader && glShaderSource && glCompileShader && glAttachShader
&& glDetachShader && glLinkProgram && glGetUniformLocation
&& glUniform1i && glUniform1f && glUniform2fv && glUniform4fv && glUniformMatrix4fv
&& glGetShaderiv && glGetShaderInfoLog && glGetProgramiv && glGetProgramInfoLog
&& glDeleteProgram && glGetAttachedShaders
&& glGetAttribLocation && glEnableVertexAttribArray && glDisableVertexAttribArray
&& glVertexAttribPointer
&& glGenBuffers && glBufferData && glDeleteBuffers && glBindBuffer;
if (!shader_support)
{
RARCH_ERR("GLSL shaders aren't supported by your OpenGL driver.\n");
return false;
}
#endif
glsl_shader = (struct gfx_shader*)calloc(1, sizeof(*glsl_shader));
if (!glsl_shader)
return false;
if (path)
{
bool ret;
if (strcmp(path_get_extension(path), "glsl") == 0)
{
strlcpy(glsl_shader->pass[0].source.cg, path, sizeof(glsl_shader->pass[0].source.cg));
glsl_shader->passes = 1;
glsl_shader->modern = true;
ret = true;
}
else if (strcmp(path_get_extension(path), "glslp") == 0)
{
config_file_t *conf = config_file_new(path);
if (conf)
{
ret = gfx_shader_read_conf_cgp(conf, glsl_shader);
glsl_shader->modern = true;
config_file_free(conf);
}
else
ret = false;
}
else
ret = gfx_shader_read_xml(path, glsl_shader);
if (!ret)
{
RARCH_ERR("[GL]: Failed to parse GLSL shader.\n");
return false;
}
}
else
{
RARCH_WARN("[GL]: Stock GLSL shaders will be used.\n");
glsl_shader->passes = 1;
glsl_shader->pass[0].source.xml.vertex = strdup(glsl_core ? stock_vertex_core : stock_vertex_modern);
glsl_shader->pass[0].source.xml.fragment = strdup(glsl_core ? stock_fragment_core : stock_fragment_modern);
glsl_shader->modern = true;
}
gfx_shader_resolve_relative(glsl_shader, path);
const char *stock_vertex = glsl_shader->modern ?
stock_vertex_modern : stock_vertex_legacy;
const char *stock_fragment = glsl_shader->modern ?
stock_fragment_modern : stock_fragment_legacy;
if (glsl_core)
{
stock_vertex = stock_vertex_core;
stock_fragment = stock_fragment_core;
}
#ifdef HAVE_OPENGLES2
if (!glsl_shader->modern)
{
RARCH_ERR("[GL]: GLES context is used, but shader is not modern. Cannot use it.\n");
goto error;
}
#else
if (glsl_core && !glsl_shader->modern)
{
RARCH_ERR("[GL]: GL core context is used, but shader is not core compatible. Cannot use it.\n");
goto error;
}
#endif
if (!(gl_program[0] = compile_program(stock_vertex, stock_fragment, 0)))
{
RARCH_ERR("GLSL stock programs failed to compile.\n");
goto error;
}
if (!compile_programs(&gl_program[1]))
goto error;
if (!gl_load_luts(glsl_shader, gl_teximage))
{
RARCH_ERR("[GL]: Failed to load LUTs.\n");
goto error;
}
for (i = 0; i <= glsl_shader->passes; i++)
find_uniforms(i, gl_program[i], &gl_uniforms[i]);
#ifdef GLSL_DEBUG
if (!gl_check_error())
RARCH_WARN("Detected GL error in GLSL.\n");
#endif
if (glsl_shader->variables)
{
struct state_tracker_info info = {0};
info.wram = (uint8_t*)pretro_get_memory_data(RETRO_MEMORY_SYSTEM_RAM);
info.info = glsl_shader->variable;
info.info_elem = glsl_shader->variables;
#ifdef HAVE_PYTHON
info.script = glsl_shader->script;
info.script_class = *glsl_shader->script_class ?
glsl_shader->script_class : NULL;
#endif
gl_state_tracker = state_tracker_init(&info);
if (!gl_state_tracker)
RARCH_WARN("Failed to init state tracker.\n");
}
glsl_enable = true;
gl_program[glsl_shader->passes + 1] = gl_program[0];
gl_uniforms[glsl_shader->passes + 1] = gl_uniforms[0];
if (glsl_shader->modern)
{
gl_program[GL_SHADER_STOCK_BLEND] = compile_program(glsl_core ? stock_vertex_core_blend : stock_vertex_modern_blend,
glsl_core ? stock_fragment_core_blend : stock_fragment_modern_blend, GL_SHADER_STOCK_BLEND);
find_uniforms(0, gl_program[GL_SHADER_STOCK_BLEND], &gl_uniforms[GL_SHADER_STOCK_BLEND]);
}
else
{
gl_program[GL_SHADER_STOCK_BLEND] = gl_program[0];
gl_uniforms[GL_SHADER_STOCK_BLEND] = gl_uniforms[0];
}
gl_glsl_reset_attrib();
for (i = 0; i < GFX_MAX_SHADERS; i++)
{
glGenBuffers(1, &glsl_vbo[i].vbo_primary);
glGenBuffers(1, &glsl_vbo[i].vbo_secondary);
}
return true;
error:
gl_glsl_deinit();
return false;
}
ExperimentalApp() : GLFWApp(1280, 800, "Geometric Algorithm Development App")
{
glfwSwapInterval(0);
igm.reset(new gui::ImGuiManager(window));
gui::make_dark_theme();
fixedTimer.start();
lights[0] = {{0, 10, -10}, {0, 0, 1}};
lights[1] = {{0, 10, 10}, {0, 1, 0}};
int width, height;
glfwGetWindowSize(window, &width, &height);
glViewport(0, 0, width, height);
grid = RenderableGrid(1, 100, 100);
cameraController.set_camera(&camera);
camera.look_at({0, 2.5, -2.5}, {0, 2.0, 0});
simpleShader = make_watched_shader(shaderMonitor, "../assets/shaders/simple_vert.glsl", "assets/shaders/simple_frag.glsl");
normalDebugShader = make_watched_shader(shaderMonitor, "../assets/shaders/normal_debug_vert.glsl", "assets/shaders/normal_debug_frag.glsl");
Renderable debugAxis = Renderable(make_axis(), false, GL_LINES);
debugAxis.pose = Pose(float4(0, 0, 0, 1), float3(0, 1, 0));
debugModels.push_back(std::move(debugAxis));
// Initial supershape settings
supershape = Renderable(make_supershape_3d(16, 5, 7, 4, 12));
supershape.pose.position = {0, 2, -2};
// Initialize PTF stuff
{
std::array<float3, 4> controlPoints = {float3(0.0f, 0.0f, 0.0f), float3(0.667f, 0.25f, 0.0f), float3(1.33f, 0.25f, 0.0f), float3(2.0f, 0.0f, 0.0f)};
ptf = make_parallel_transport_frame_bezier(controlPoints, 32);
for (int i = 0; i < ptf.size(); ++i)
{
Renderable p = Renderable(make_cube());
ptfBoxes.push_back(std::move(p));
}
}
// Initialize Parabolic pointer stuff
{
// Set up the ground plane used as a nav mesh for the parabolic pointer
worldSurface = make_plane(48, 48, 96, 96);
for (auto & p : worldSurface.vertices)
{
float4x4 model = make_rotation_matrix({1, 0, 0}, -ANVIL_PI / 2);
p = transform_coord(model, p);
}
worldSurfaceRenderable = Renderable(worldSurface);
parabolicPointer = make_parabolic_pointer(worldSurface, params);
}
// Initialize objects for ballistic trajectory tests
{
turret.source = Renderable(make_tetrahedron());
turret.source.pose = Pose({-5, 2, 5});
turret.target = Renderable(make_cube());
turret.target.pose = Pose({0, 0, 40});
turret.bullet = Renderable(make_sphere(1.0f));
}
float4x4 tMat = mul(make_translation_matrix({3, 4, 5}), make_rotation_matrix({0, 0, 1}, ANVIL_PI / 2));
auto p = make_pose_from_transform_matrix(tMat);
std::cout << tMat << std::endl;
std::cout << p << std::endl;
gl_check_error(__FILE__, __LINE__);
}
static bool gl_glsl_init(const char *path)
{
#if !defined(HAVE_OPENGLES2) && !defined(HAVE_OPENGL_MODERN) && !defined(__APPLE__)
// Load shader functions.
LOAD_GL_SYM(CreateProgram);
LOAD_GL_SYM(UseProgram);
LOAD_GL_SYM(CreateShader);
LOAD_GL_SYM(DeleteShader);
LOAD_GL_SYM(ShaderSource);
LOAD_GL_SYM(CompileShader);
LOAD_GL_SYM(AttachShader);
LOAD_GL_SYM(DetachShader);
LOAD_GL_SYM(LinkProgram);
LOAD_GL_SYM(GetUniformLocation);
LOAD_GL_SYM(Uniform1i);
LOAD_GL_SYM(Uniform1f);
LOAD_GL_SYM(Uniform2fv);
LOAD_GL_SYM(Uniform4fv);
LOAD_GL_SYM(UniformMatrix4fv);
LOAD_GL_SYM(GetShaderiv);
LOAD_GL_SYM(GetShaderInfoLog);
LOAD_GL_SYM(GetProgramiv);
LOAD_GL_SYM(GetProgramInfoLog);
LOAD_GL_SYM(DeleteProgram);
LOAD_GL_SYM(GetAttachedShaders);
LOAD_GL_SYM(GetAttribLocation);
LOAD_GL_SYM(EnableVertexAttribArray);
LOAD_GL_SYM(DisableVertexAttribArray);
LOAD_GL_SYM(VertexAttribPointer);
RARCH_LOG("Checking GLSL shader support ...\n");
bool shader_support = pglCreateProgram && pglUseProgram && pglCreateShader
&& pglDeleteShader && pglShaderSource && pglCompileShader && pglAttachShader
&& pglDetachShader && pglLinkProgram && pglGetUniformLocation
&& pglUniform1i && pglUniform1f && pglUniform2fv && pglUniform4fv && pglUniformMatrix4fv
&& pglGetShaderiv && pglGetShaderInfoLog && pglGetProgramiv && pglGetProgramInfoLog
&& pglDeleteProgram && pglGetAttachedShaders
&& pglGetAttribLocation && pglEnableVertexAttribArray && pglDisableVertexAttribArray
&& pglVertexAttribPointer;
if (!shader_support)
{
RARCH_ERR("GLSL shaders aren't supported by your OpenGL driver.\n");
return false;
}
#endif
glsl_shader = (struct gfx_shader*)calloc(1, sizeof(*glsl_shader));
if (!glsl_shader)
return false;
if (path)
{
bool ret;
if (strcmp(path_get_extension(path), "glsl") == 0)
{
strlcpy(glsl_shader->pass[0].source.cg, path, sizeof(glsl_shader->pass[0].source.cg));
glsl_shader->passes = 1;
glsl_shader->modern = true;
ret = true;
}
else if (strcmp(path_get_extension(path), "glslp") == 0)
{
config_file_t *conf = config_file_new(path);
if (conf)
{
ret = gfx_shader_read_conf_cgp(conf, glsl_shader);
glsl_shader->modern = true;
config_file_free(conf);
}
else
ret = false;
}
else
ret = gfx_shader_read_xml(path, glsl_shader);
if (!ret)
{
RARCH_ERR("[GL]: Failed to parse GLSL shader.\n");
return false;
}
}
else
{
RARCH_WARN("[GL]: Stock GLSL shaders will be used.\n");
glsl_shader->passes = 1;
glsl_shader->pass[0].source.xml.vertex = strdup(stock_vertex_modern);
glsl_shader->pass[0].source.xml.fragment = strdup(stock_fragment_modern);
glsl_shader->modern = true;
}
gfx_shader_resolve_relative(glsl_shader, path);
#ifdef HAVE_OPENGLES2
if (!glsl_shader->modern)
{
RARCH_ERR("[GL]: GLES context is used, but shader is not modern. Cannot use it.\n");
return false;
}
#endif
const char *stock_vertex = glsl_shader->modern ?
stock_vertex_modern : stock_vertex_legacy;
const char *stock_fragment = glsl_shader->modern ?
stock_fragment_modern : stock_fragment_legacy;
if (!(gl_program[0] = compile_program(stock_vertex, stock_fragment, 0)))
{
RARCH_ERR("GLSL stock programs failed to compile.\n");
gl_glsl_free_shader();
return false;
}
if (!compile_programs(&gl_program[1]))
{
gl_glsl_free_shader();
return false;
}
if (!load_luts())
{
RARCH_ERR("[GL]: Failed to load LUTs.\n");
gl_glsl_free_shader();
return false;
}
for (unsigned i = 0; i <= glsl_shader->passes; i++)
find_uniforms(gl_program[i], &gl_uniforms[i]);
#ifdef GLSL_DEBUG
if (!gl_check_error())
RARCH_WARN("Detected GL error in GLSL.\n");
#endif
if (glsl_shader->variables)
{
struct state_tracker_info info = {0};
info.wram = (uint8_t*)pretro_get_memory_data(RETRO_MEMORY_SYSTEM_RAM);
info.info = glsl_shader->variable;
info.info_elem = glsl_shader->variables;
#ifdef HAVE_PYTHON
info.script = glsl_shader->script;
info.script_class = *glsl_shader->script_class ?
glsl_shader->script_class : NULL;
#endif
gl_state_tracker = state_tracker_init(&info);
if (!gl_state_tracker)
RARCH_WARN("Failed to init state tracker.\n");
}
glsl_enable = true;
gl_program[glsl_shader->passes + 1] = gl_program[0];
gl_uniforms[glsl_shader->passes + 1] = gl_uniforms[0];
if (glsl_shader->modern)
{
gl_program[GL_SHADER_STOCK_BLEND] = compile_program(stock_vertex_modern_blend,
stock_fragment_modern_blend, GL_SHADER_STOCK_BLEND);
find_uniforms(gl_program[GL_SHADER_STOCK_BLEND], &gl_uniforms[GL_SHADER_STOCK_BLEND]);
}
else
{
gl_program[GL_SHADER_STOCK_BLEND] = gl_program[0];
gl_uniforms[GL_SHADER_STOCK_BLEND] = gl_uniforms[0];
}
gl_glsl_reset_attrib();
return true;
}
ExperimentalApp() : GLFWApp(1280, 720, "Shadow App")
{
glfwSwapInterval(0);
gen = std::mt19937(rd());
igm.reset(new gui::ImGuiManager(window));
gui::make_dark_theme();
int width, height;
glfwGetWindowSize(window, &width, &height);
glViewport(0, 0, width, height);
cameraController.set_camera(&camera);
camera.farClip = 55.f;
camera.look_at({0, 0, +15}, {0, 0, 0});
// Debugging views
uiSurface.bounds = {0, 0, (float) width, (float) height};
uiSurface.add_child( {{0.0000f, +10},{0, +10},{0.1667f, -10},{0.133f, +10}});
uiSurface.add_child( {{0.1667f, +10},{0, +10},{0.3334f, -10},{0.133f, +10}});
uiSurface.add_child( {{0.3334f, +10},{0, +10},{0.5009f, -10},{0.133f, +10}});
uiSurface.add_child( {{0.5000f, +10},{0, +10},{0.6668f, -10},{0.133f, +10}});
uiSurface.add_child( {{0.6668f, +10},{0, +10},{0.8335f, -10},{0.133f, +10}});
uiSurface.add_child( {{0.8335f, +10},{0, +10},{1.0000f, -10},{0.133f, +10}});
uiSurface.layout();
fullscreen_post_quad = make_fullscreen_quad();
sceneShader = make_watched_shader(shaderMonitor, "assets/shaders/shadow/scene_vert.glsl", "assets/shaders/shadow/scene_frag.glsl");
shadowmapShader = make_watched_shader(shaderMonitor, "assets/shaders/shadow/shadowmap_vert.glsl", "assets/shaders/shadow/shadowmap_frag.glsl");
pointLightShader = make_watched_shader(shaderMonitor, "assets/shaders/shadow/point_light_vert.glsl", "assets/shaders/shadow/point_light_frag.glsl");
gaussianBlurShader = make_watched_shader(shaderMonitor, "assets/shaders/gaussian_blur_vert.glsl", "assets/shaders/gaussian_blur_frag.glsl");
skydome.recompute(2, 10.f, 1.15f);
auto lightDir = skydome.get_light_direction();
sunLight = std::make_shared<DirectionalLight>(lightDir, float3(.50f, .75f, .825f), 64.f);
// todo spotLightB
shadowDepthTexture.load_data(shadowmapResolution, shadowmapResolution, GL_DEPTH_COMPONENT32, GL_DEPTH_COMPONENT, GL_FLOAT, nullptr);
shadowFramebuffer.attach(GL_DEPTH_ATTACHMENT, shadowDepthTexture);
if (!shadowFramebuffer.check_complete()) throw std::runtime_error("incomplete shadow framebuffer");
shadowBlurTexture.load_data(shadowmapResolution, shadowmapResolution, GL_R32F, GL_RGBA, GL_FLOAT, nullptr);
shadowBlurFramebuffer.attach(GL_COLOR_ATTACHMENT0, shadowBlurTexture);
if (!shadowBlurFramebuffer.check_complete()) throw std::runtime_error("incomplete blur framebuffer");
auto spotLightA = std::make_shared<SpotLight>(float3(0.f, 10.f, 0.f), float3(0.f, -1.f, 0.f), float3(0.766f, 0.766f, 0.005f), 30.0f, float3(1.0f, 0.0f, 0.0001f));
spotLights.push_back(spotLightA);
// Single spotlight fbo
for (int i = 0; i < 1; ++i)
{
auto buffer = std::make_shared<SpotLightFramebuffer>();
buffer->create(shadowmapResolution);
spotLightFramebuffers.push_back(buffer);
}
// Point light init
{
pointLight.reset(new PointLight(float3(0.f, 0.f, 0.f), float3(0, 1, 1), float3(1.0f, 0.05f, 0.0002f)));
pointLightFramebuffer.reset(new PointLightFramebuffer());
pointLightFramebuffer->create(float2(shadowmapResolution));
pointLightSphere = std::make_shared<Renderable>(make_sphere(0.5f));
sceneObjects.push_back(pointLightSphere);
}
viewA.reset(new GLTextureView(shadowDepthTexture.get_gl_handle()));
viewB.reset(new GLTextureView(shadowBlurTexture.get_gl_handle()));
viewC.reset(new GLTextureView(spotLightFramebuffers[0]->shadowDepthTexture.get_gl_handle()));
viewD.reset(new GLTextureView(pointLightFramebuffer->depthBuffer.get_gl_handle()));
auto lucy = load_geometry_from_ply("assets/models/stanford/lucy.ply");
rescale_geometry(lucy, 8.0f);
auto lucyBounds = lucy.compute_bounds();
auto statue = std::make_shared<Renderable>(lucy);
statue->pose.position = {0, 0, 0};
//sceneObjects.push_back(statue);
auto hollowCube = load_geometry_from_ply("assets/models/geometry/CubeHollowOpen.ply");
for (auto & v : hollowCube.vertices) v *= 0.20f;
auto hCube = std::make_shared<Renderable>(hollowCube);
hCube->pose.position = float3(0, 0, 0);
hCube->pose.orientation = make_rotation_quat_around_x(ANVIL_PI / 2);
//sceneObjects.push_back(hCube);
auto curvedMesh = make_curved_plane(2, 1, 8, 8);
sceneObjects.push_back(std::make_shared<Renderable>(curvedMesh));
//floor = std::make_shared<Renderable>(make_plane(32.f, 32.f, 64, 64), false);
//floor->pose.orientation = make_rotation_quat_axis_angle({1, 0, 0}, -ANVIL_PI / 2);
//floor->pose.position = {0, lucyBounds.min().y, 0};
//sceneObjects.push_back(floor);
gl_check_error(__FILE__, __LINE__);
}
void on_draw() override
{
glfwMakeContextCurrent(window);
glEnable(GL_CULL_FACE);
glEnable(GL_DEPTH_TEST);
int width, height;
glfwGetWindowSize(window, &width, &height);
glViewport(0, 0, width, height);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glClearColor(0.1f, 0.1f, 0.5f, 1.0f);
const auto proj = camera.get_projection_matrix((float) width / (float) height);
const float4x4 view = camera.get_view_matrix();
const float4x4 viewProj = mul(proj, view);
skydome.render(viewProj, camera.get_eye_point(), camera.farClip);
// Simple Shader
{
simpleShader->bind();
simpleShader->uniform("u_viewProj", viewProj);
simpleShader->uniform("u_eye", camera.get_eye_point());
simpleShader->uniform("u_emissive", float3(.10f, 0.10f, 0.10f));
simpleShader->uniform("u_diffuse", float3(0.4f, 0.4f, 0.4f));
for (int i = 0; i < lights.size(); i++)
{
auto light = lights[i];
simpleShader->uniform("u_lights[" + std::to_string(i) + "].position", light.pose.position);
simpleShader->uniform("u_lights[" + std::to_string(i) + "].color", light.color);
}
for (const auto & model : proceduralModels)
{
simpleShader->uniform("u_modelMatrix", model.get_model());
simpleShader->uniform("u_modelMatrixIT", inv(transpose(model.get_model())));
model.draw();
}
for (const auto & model : cameraPositions)
{
simpleShader->uniform("u_modelMatrix", model.get_model());
simpleShader->uniform("u_modelMatrixIT", inv(transpose(model.get_model())));
model.draw();
}
gl_check_error(__FILE__, __LINE__);
simpleShader->unbind();
}
grid.render(proj, view);
gl_check_error(__FILE__, __LINE__);
glfwSwapBuffers(window);
frameCount++;
}
static void *gl_init(const video_info_t *video, const input_driver_t **input, void **input_data)
{
#ifdef _WIN32
gfx_set_dwm();
#endif
if (!sdlwrap_init())
return NULL;
const SDL_VideoInfo *video_info = SDL_GetVideoInfo();
rarch_assert(video_info);
unsigned full_x = video_info->current_w;
unsigned full_y = video_info->current_h;
RARCH_LOG("Detecting desktop resolution %ux%u.\n", full_x, full_y);
sdlwrap_set_swap_interval(video->vsync ? 1 : 0, false);
unsigned win_width = video->width;
unsigned win_height = video->height;
if (video->fullscreen && (win_width == 0) && (win_height == 0))
{
win_width = full_x;
win_height = full_y;
}
if (!sdlwrap_set_video_mode(win_width, win_height,
g_settings.video.force_16bit ? 15 : 0, video->fullscreen))
return NULL;
gfx_window_title_reset();
char buf[128];
if (gfx_window_title(buf, sizeof(buf)))
sdlwrap_wm_set_caption(buf);
// Remove that ugly mouse :D
SDL_ShowCursor(SDL_DISABLE);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
#if (defined(HAVE_XML) || defined(HAVE_CG)) && defined(_WIN32)
// Win32 GL lib doesn't have some functions needed for XML shaders.
// Need to load dynamically :(
if (!load_gl_proc())
{
sdlwrap_destroy();
return NULL;
}
#endif
gl_t *gl = (gl_t*)calloc(1, sizeof(gl_t));
if (!gl)
{
sdlwrap_destroy();
return NULL;
}
gl->vsync = video->vsync;
gl->fullscreen = video->fullscreen;
gl->full_x = full_x;
gl->full_y = full_y;
gl->win_width = win_width;
gl->win_height = win_height;
RARCH_LOG("GL: Using resolution %ux%u\n", gl->win_width, gl->win_height);
if (!gl_shader_init())
{
RARCH_ERR("Shader init failed.\n");
sdlwrap_destroy();
free(gl);
return NULL;
}
RARCH_LOG("GL: Loaded %u program(s).\n", gl_shader_num());
#ifdef HAVE_FBO
// Set up render to texture.
gl_init_fbo(gl, RARCH_SCALE_BASE * video->input_scale,
RARCH_SCALE_BASE * video->input_scale);
#endif
gl->keep_aspect = video->force_aspect;
// Apparently need to set viewport for passes when we aren't using FBOs.
gl_shader_use(0);
set_viewport(gl, gl->win_width, gl->win_height, false, true);
gl_shader_use(1);
set_viewport(gl, gl->win_width, gl->win_height, false, true);
bool force_smooth;
if (gl_shader_filter_type(1, &force_smooth))
gl->tex_filter = force_smooth ? GL_LINEAR : GL_NEAREST;
else
gl->tex_filter = video->smooth ? GL_LINEAR : GL_NEAREST;
gl->texture_type = GL_BGRA;
gl->texture_fmt = video->rgb32 ? GL_UNSIGNED_INT_8_8_8_8_REV : GL_UNSIGNED_SHORT_1_5_5_5_REV;
gl->base_size = video->rgb32 ? sizeof(uint32_t) : sizeof(uint16_t);
glEnable(GL_TEXTURE_2D);
glDisable(GL_DEPTH_TEST);
glDisable(GL_DITHER);
glClearColor(0, 0, 0, 1);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
glGenTextures(TEXTURES, gl->texture);
for (unsigned i = 0; i < TEXTURES; i++)
{
glBindTexture(GL_TEXTURE_2D, gl->texture[i]);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_BORDER);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_BORDER);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, gl->tex_filter);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, gl->tex_filter);
}
glEnableClientState(GL_VERTEX_ARRAY);
glEnableClientState(GL_TEXTURE_COORD_ARRAY);
glEnableClientState(GL_COLOR_ARRAY);
glVertexPointer(2, GL_FLOAT, 0, vertexes_flipped);
memcpy(gl->tex_coords, tex_coords, sizeof(tex_coords));
glTexCoordPointer(2, GL_FLOAT, 0, gl->tex_coords);
glColorPointer(4, GL_FLOAT, 0, white_color);
set_lut_texture_coords(tex_coords);
gl->tex_w = RARCH_SCALE_BASE * video->input_scale;
gl->tex_h = RARCH_SCALE_BASE * video->input_scale;
// Empty buffer that we use to clear out the texture with on res change.
gl->empty_buf = calloc(gl->tex_w * gl->tex_h, gl->base_size);
for (unsigned i = 0; i < TEXTURES; i++)
{
glBindTexture(GL_TEXTURE_2D, gl->texture[i]);
glPixelStorei(GL_UNPACK_ROW_LENGTH, gl->tex_w);
glTexImage2D(GL_TEXTURE_2D,
0, GL_RGBA, gl->tex_w, gl->tex_h, 0, gl->texture_type,
gl->texture_fmt, gl->empty_buf ? gl->empty_buf : NULL);
}
glBindTexture(GL_TEXTURE_2D, gl->texture[gl->tex_index]);
for (unsigned i = 0; i < TEXTURES; i++)
{
gl->last_width[i] = gl->tex_w;
gl->last_height[i] = gl->tex_h;
}
for (unsigned i = 0; i < TEXTURES; i++)
{
gl->prev_info[i].tex = gl->texture[(gl->tex_index - (i + 1)) & TEXTURES_MASK];
gl->prev_info[i].input_size[0] = gl->tex_w;
gl->prev_info[i].tex_size[0] = gl->tex_w;
gl->prev_info[i].input_size[1] = gl->tex_h;
gl->prev_info[i].tex_size[1] = gl->tex_h;
memcpy(gl->prev_info[i].coord, tex_coords, sizeof(tex_coords));
}
// Hook up SDL input driver to get SDL_QUIT events and RESIZE.
sdl_input_t *sdl_input = (sdl_input_t*)input_sdl.init();
if (sdl_input)
{
*input = &input_sdl;
*input_data = sdl_input;
}
else
*input = NULL;
gl_init_font(gl, g_settings.video.font_path, g_settings.video.font_size);
if (!gl_check_error())
{
sdlwrap_destroy();
free(gl);
return NULL;
}
return gl;
}