void COverlayTextureGL::Render(SRenderState& state)
{
glEnable(GL_BLEND);
glBindTexture(GL_TEXTURE_2D, m_texture);
if(m_pma)
glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
else
glBlendFunc(GL_SRC_ALPHA,GL_ONE_MINUS_SRC_ALPHA);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
DRAWRECT rd;
if (m_pos == POSITION_RELATIVE)
{
rd.top = state.y - state.height * 0.5;
rd.bottom = state.y + state.height * 0.5;
rd.left = state.x - state.width * 0.5;
rd.right = state.x + state.width * 0.5;
}
else
{
rd.top = state.y;
rd.bottom = state.y + state.height;
rd.left = state.x;
rd.right = state.x + state.width;
}
#if defined(HAS_GL)
CRenderSystemGL* renderSystem = dynamic_cast<CRenderSystemGL*>(CServiceBroker::GetRenderSystem());
renderSystem->EnableShader(SM_TEXTURE);
GLint posLoc = renderSystem->ShaderGetPos();
GLint tex0Loc = renderSystem->ShaderGetCoord0();
GLint uniColLoc = renderSystem->ShaderGetUniCol();
GLfloat col[4] = {1.0f, 1.0f, 1.0f, 1.0f};
struct PackedVertex
{
float x, y, z;
float u1, v1;
} vertex[4];
GLubyte idx[4] = {0, 1, 3, 2}; //determines order of the vertices
GLuint vertexVBO;
GLuint indexVBO;
glUniform4f(uniColLoc,(col[0]), (col[1]), (col[2]), (col[3]));
// Setup vertex position values
vertex[0].x = rd.left;
vertex[0].y = rd.top;
vertex[0].z = 0;
vertex[0].u1 = 0.0f;
vertex[0].v1 = 0.0;
vertex[1].x = rd.right;
vertex[1].y = rd.top;
vertex[1].z = 0;
vertex[1].u1 = m_u;
vertex[1].v1 = 0.0f;
vertex[2].x = rd.right;
vertex[2].y = rd.bottom;
vertex[2].z = 0;
vertex[2].u1 = m_u;
vertex[2].v1 = m_v;
vertex[3].x = rd.left;
vertex[3].y = rd.bottom;
vertex[3].z = 0;
vertex[3].u1 = 0.0f;
vertex[3].v1 = m_v;
glGenBuffers(1, &vertexVBO);
glBindBuffer(GL_ARRAY_BUFFER, vertexVBO);
glBufferData(GL_ARRAY_BUFFER, sizeof(PackedVertex)*4, &vertex[0], GL_STATIC_DRAW);
glVertexAttribPointer(posLoc, 2, GL_FLOAT, 0, sizeof(PackedVertex), BUFFER_OFFSET(offsetof(PackedVertex, x)));
glVertexAttribPointer(tex0Loc, 2, GL_FLOAT, 0, sizeof(PackedVertex), BUFFER_OFFSET(offsetof(PackedVertex, u1)));
glEnableVertexAttribArray(posLoc);
glEnableVertexAttribArray(tex0Loc);
glGenBuffers(1, &indexVBO);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, indexVBO);
glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(GLubyte)*4, idx, GL_STATIC_DRAW);
glDrawElements(GL_TRIANGLE_STRIP, 4, GL_UNSIGNED_BYTE, 0);
glDisableVertexAttribArray(posLoc);
glDisableVertexAttribArray(tex0Loc);
glBindBuffer(GL_ARRAY_BUFFER, 0);
glDeleteBuffers(1, &vertexVBO);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
glDeleteBuffers(1, &indexVBO);
renderSystem->DisableShader();
#else
CRenderSystemGLES* renderSystem = dynamic_cast<CRenderSystemGLES*>(CServiceBroker::GetRenderSystem());
renderSystem->EnableGUIShader(SM_TEXTURE);
GLint posLoc = renderSystem->GUIShaderGetPos();
GLint colLoc = renderSystem->GUIShaderGetCol();
GLint tex0Loc = renderSystem->GUIShaderGetCoord0();
GLint uniColLoc = renderSystem->GUIShaderGetUniCol();
GLfloat col[4] = {1.0f, 1.0f, 1.0f, 1.0f};
GLfloat ver[4][2];
GLfloat tex[4][2];
GLubyte idx[4] = {0, 1, 3, 2}; //determines order of triangle strip
glVertexAttribPointer(posLoc, 2, GL_FLOAT, 0, 0, ver);
glVertexAttribPointer(colLoc, 4, GL_FLOAT, 0, 0, col);
glVertexAttribPointer(tex0Loc, 2, GL_FLOAT, 0, 0, tex);
glEnableVertexAttribArray(posLoc);
glEnableVertexAttribArray(colLoc);
glEnableVertexAttribArray(tex0Loc);
glUniform4f(uniColLoc,(col[0]), (col[1]), (col[2]), (col[3]));
// Setup vertex position values
ver[0][0] = ver[3][0] = rd.left;
ver[0][1] = ver[1][1] = rd.top;
ver[1][0] = ver[2][0] = rd.right;
ver[2][1] = ver[3][1] = rd.bottom;
// Setup texture coordinates
tex[0][0] = tex[0][1] = tex[1][1] = tex[3][0] = 0.0f;
tex[1][0] = tex[2][0] = m_u;
tex[2][1] = tex[3][1] = m_v;
glDrawElements(GL_TRIANGLE_STRIP, 4, GL_UNSIGNED_BYTE, idx);
glDisableVertexAttribArray(posLoc);
glDisableVertexAttribArray(colLoc);
glDisableVertexAttribArray(tex0Loc);
renderSystem->DisableGUIShader();
#endif
glDisable(GL_BLEND);
glBindTexture(GL_TEXTURE_2D, 0);
}
void COverlayGlyphGL::Render(SRenderState& state)
{
if ((m_texture == 0) || (m_count == 0))
return;
glEnable(GL_BLEND);
glBindTexture(GL_TEXTURE_2D, m_texture);
glBlendFunc(GL_SRC_ALPHA,GL_ONE_MINUS_SRC_ALPHA);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glMatrixModview.Push();
glMatrixModview->Translatef(state.x, state.y, 0.0f);
glMatrixModview->Scalef(state.width, state.height, 1.0f);
glMatrixModview.Load();
#ifdef HAS_GL
CRenderSystemGL* renderSystem = dynamic_cast<CRenderSystemGL*>(CServiceBroker::GetRenderSystem());
renderSystem->EnableShader(SM_FONTS);
GLint posLoc = renderSystem->ShaderGetPos();
GLint colLoc = renderSystem->ShaderGetCol();
GLint tex0Loc = renderSystem->ShaderGetCoord0();
std::vector<VERTEX> vecVertices( 6 * m_count);
VERTEX *vertices = &vecVertices[0];
for (int i=0; i<m_count*4; i+=4)
{
*vertices++ = m_vertex[i];
*vertices++ = m_vertex[i+1];
*vertices++ = m_vertex[i+2];
*vertices++ = m_vertex[i+1];
*vertices++ = m_vertex[i+3];
*vertices++ = m_vertex[i+2];
}
GLuint VertexVBO;
glGenBuffers(1, &VertexVBO);
glBindBuffer(GL_ARRAY_BUFFER, VertexVBO);
glBufferData(GL_ARRAY_BUFFER, sizeof(VERTEX)*vecVertices.size(), &vecVertices[0], GL_STATIC_DRAW);
glVertexAttribPointer(posLoc, 3, GL_FLOAT, GL_FALSE, sizeof(VERTEX), BUFFER_OFFSET(offsetof(VERTEX, x)));
glVertexAttribPointer(colLoc, 4, GL_UNSIGNED_BYTE, GL_TRUE, sizeof(VERTEX), BUFFER_OFFSET(offsetof(VERTEX, r)));
glVertexAttribPointer(tex0Loc, 2, GL_FLOAT, GL_FALSE, sizeof(VERTEX), BUFFER_OFFSET(offsetof(VERTEX, u)));
glEnableVertexAttribArray(posLoc);
glEnableVertexAttribArray(colLoc);
glEnableVertexAttribArray(tex0Loc);
glDrawArrays(GL_TRIANGLES, 0, vecVertices.size());
glDisableVertexAttribArray(posLoc);
glDisableVertexAttribArray(colLoc);
glDisableVertexAttribArray(tex0Loc);
glBindBuffer(GL_ARRAY_BUFFER, 0);
glDeleteBuffers(1, &VertexVBO);
renderSystem->DisableShader();
#else
CRenderSystemGLES* renderSystem = dynamic_cast<CRenderSystemGLES*>(CServiceBroker::GetRenderSystem());
renderSystem->EnableGUIShader(SM_FONTS);
GLint posLoc = renderSystem->GUIShaderGetPos();
GLint colLoc = renderSystem->GUIShaderGetCol();
GLint tex0Loc = renderSystem->GUIShaderGetCoord0();
// stack object until VBOs will be used
std::vector<VERTEX> vecVertices( 6 * m_count);
VERTEX *vertices = &vecVertices[0];
for (int i=0; i<m_count*4; i+=4)
{
*vertices++ = m_vertex[i];
*vertices++ = m_vertex[i+1];
*vertices++ = m_vertex[i+2];
*vertices++ = m_vertex[i+1];
*vertices++ = m_vertex[i+3];
*vertices++ = m_vertex[i+2];
}
vertices = &vecVertices[0];
glVertexAttribPointer(posLoc, 3, GL_FLOAT, GL_FALSE, sizeof(VERTEX), (char*)vertices + offsetof(VERTEX, x));
glVertexAttribPointer(colLoc, 4, GL_UNSIGNED_BYTE, GL_TRUE, sizeof(VERTEX), (char*)vertices + offsetof(VERTEX, r));
glVertexAttribPointer(tex0Loc, 2, GL_FLOAT, GL_FALSE, sizeof(VERTEX), (char*)vertices + offsetof(VERTEX, u));
glEnableVertexAttribArray(posLoc);
glEnableVertexAttribArray(colLoc);
glEnableVertexAttribArray(tex0Loc);
glDrawArrays(GL_TRIANGLES, 0, vecVertices.size());
glDisableVertexAttribArray(posLoc);
glDisableVertexAttribArray(colLoc);
glDisableVertexAttribArray(tex0Loc);
renderSystem->DisableGUIShader();
#endif
glMatrixModview.PopLoad();
glDisable(GL_BLEND);
glBindTexture(GL_TEXTURE_2D, 0);
}