Commit 1f8b7769 authored by Maciej Suminski's avatar Maciej Suminski
Browse files

gal: Check maximum framebuffer size (OpenGL).

parent 1855db54

common/gal/opengl/opengl_compositor.cpp

+13 −3
Original line number Diff line number Diff line
@@ -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;