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gal: Check maximum framebuffer size (OpenGL).

This commit is contained in:
Maciej Suminski 2014-11-13 16:17:53 +01:00
parent 1855db5493
commit 1f8b77697f
1 changed files with 13 additions and 3 deletions
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16
common/gal/opengl/opengl_compositor.cpp
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@ -55,7 +55,7 @@ void OPENGL_COMPOSITOR::Initialize()
// We need framebuffer objects for drawing the screen contents
// Generate framebuffer and a depth buffer
glGenFramebuffersEXT( 1, &m_framebuffer );
glBindFramebufferEXT( GL_FRAMEBUFFER, m_framebuffer );
glBindFramebufferEXT( GL_FRAMEBUFFER_EXT, m_framebuffer );
m_currentFbo = m_framebuffer;
// Allocate memory for the depth buffer
@ -91,10 +91,12 @@ unsigned int OPENGL_COMPOSITOR::CreateBuffer()
{
wxASSERT( m_initialized );
unsigned int maxBuffers;
unsigned int maxBuffers, maxWidth, maxHeight;
// Get the maximum number of buffers
// Get the maximum size & number of buffers
glGetIntegerv( GL_MAX_COLOR_ATTACHMENTS, (GLint*) &maxBuffers );
glGetIntegerv( GL_MAX_FRAMEBUFFER_WIDTH, (GLint*) &maxWidth );
glGetIntegerv( GL_MAX_FRAMEBUFFER_HEIGHT, (GLint*) &maxHeight );
if( usedBuffers() >= maxBuffers )
{
@ -104,6 +106,14 @@ unsigned int OPENGL_COMPOSITOR::CreateBuffer()
return 0; // Unfortunately we have no more free buffers left
}
if( m_width > maxWidth || m_height > maxHeight ) {
DisplayError( NULL, wxString::Format( wxT( "Max handled framebuffer size is %d x %d,"
" but %x x %x is required." ),
maxWidth, maxHeight, m_width, m_height ) );
return 0;
}
// GL_COLOR_ATTACHMENTn are consecutive integers
GLuint attachmentPoint = GL_COLOR_ATTACHMENT0 + usedBuffers();
GLuint textureTarget;