KDvoid Controller::draw ( KDvoid )
{
CC_NODE_DRAW_SETUP ( );
GLfloat fVertices [ ] =
{
0, 512,
1024, 512,
0, 0,
1024, 0,
};
GLfloat fCoords [ ] =
{
0, 0,
1, 0,
0, 1,
1, 1,
};
ccGLBindTexture2D ( m_uTexture );
ccGLEnableVertexAttribs ( kCCVertexAttribFlag_Position | kCCVertexAttribFlag_TexCoords );
if ( m_pDrawFunc )
{
m_pDrawFunc ( KD_GET_UST2MSEC );
}
ccGLVertexAttribPointer ( kCCVertexAttrib_Position , 2, GL_FLOAT, GL_FALSE, 0, fVertices );
ccGLVertexAttribPointer ( kCCVertexAttrib_TexCoords, 2, GL_FLOAT, GL_FALSE, 0, fCoords );
glDrawArrays ( GL_TRIANGLE_STRIP, 0, 4 );
ccGLBindTexture2D ( 0 );
}
KDvoid CCTextureAtlas::drawNumberOfQuads ( KDuint uNumber, KDuint uStart )
{
if ( 0 == uNumber )
{
return;
}
ccGLBindTexture2D ( m_pTexture->getName ( ) );
#if CC_TEXTURE_ATLAS_USE_VAO
//
// Using VBO and VAO
//
// XXX: update is done in draw... perhaps it should be done in a timer
if ( m_bDirty )
{
glBindBuffer ( GL_ARRAY_BUFFER, m_pBuffersVBO[0] );
// option 1: subdata
// glBufferSubData ( GL_ARRAY_BUFFER, sizeof ( m_pQuads[0] ) * uStart, sizeof ( m_pQuads[0] ) * uNumber , &m_pQuads [ uStart ] );
// option 2: data
// glBufferData ( GL_ARRAY_BUFFER, sizeof ( m_pQuads[0] ) * ( n - uStart ), &m_pQuads [ uStart ], GL_DYNAMIC_DRAW );
// option 3: orphaning + glMapBuffer
glBufferData ( GL_ARRAY_BUFFER, sizeof ( m_pQuads[0] ) * ( n - uStart ), KD_NULL, GL_DYNAMIC_DRAW );
KDvoid* pBuff = glMapBuffer ( GL_ARRAY_BUFFER, GL_WRITE_ONLY );
kdMemcpy ( pBuff, m_pQuads, sizeof ( m_pQuads [ 0 ] ) * ( n - uStart ) );
glUnmapBuffer ( GL_ARRAY_BUFFER );
glBindBuffer ( GL_ARRAY_BUFFER, 0 );
m_bDirty = KD_FALSE;
}
ccGLBindVAO ( m_uVAOname );
#if CC_REBIND_INDICES_BUFFER
glBindBuffer ( GL_ELEMENT_ARRAY_BUFFER, m_pBuffersVBO[1] );
#endif
glDrawElements ( GL_TRIANGLES, (GLsizei) uNumber * 6, GL_UNSIGNED_SHORT, (GLvoid*) ( uStart * 6 * sizeof ( m_pIndices[0] ) ) );
#if CC_REBIND_INDICES_BUFFER
glBindBuffer ( GL_ELEMENT_ARRAY_BUFFER, 0 );
#endif
// glBindVertexArray ( 0 );
#else // CC_TEXTURE_ATLAS_USE_VAO
//
// Using VBO without VAO
//
#define kQuadSize sizeof(m_pQuads[0].bl)
glBindBuffer ( GL_ARRAY_BUFFER, m_pBuffersVBO[0] );
// XXX: update is done in draw... perhaps it should be done in a timer
if ( m_bDirty )
{
glBufferSubData ( GL_ARRAY_BUFFER, sizeof ( m_pQuads[0] ) * uStart, sizeof ( m_pQuads[0] ) * uNumber , &m_pQuads[ uStart ] );
m_bDirty = KD_FALSE;
}
ccGLEnableVertexAttribs ( kCCVertexAttribFlag_PosColorTex );
ccGLVertexAttribPointer ( kCCVertexAttrib_Position , 3, GL_FLOAT , GL_FALSE, kQuadSize, (GLvoid*) offsetof ( ccV3F_C4B_T2F, vertices ) );
ccGLVertexAttribPointer ( kCCVertexAttrib_Color , 4, GL_UNSIGNED_BYTE, GL_TRUE , kQuadSize, (GLvoid*) offsetof ( ccV3F_C4B_T2F, colors ) );
ccGLVertexAttribPointer ( kCCVertexAttrib_TexCoords, 2, GL_FLOAT , GL_FALSE, kQuadSize, (GLvoid*) offsetof ( ccV3F_C4B_T2F, texCoords ) );
glBindBuffer ( GL_ELEMENT_ARRAY_BUFFER, m_pBuffersVBO[1] );
glDrawElements ( GL_TRIANGLES, (GLsizei) uNumber * 6, GL_UNSIGNED_SHORT, (GLvoid*) ( uStart * 6 * sizeof ( m_pIndices[0] ) ) );
glBindBuffer ( GL_ARRAY_BUFFER, 0 );
glBindBuffer ( GL_ELEMENT_ARRAY_BUFFER, 0 );
#endif // CC_TEXTURE_ATLAS_USE_VAO
CC_INCREMENT_GL_DRAWS ( 1 );
CHECK_GL_ERROR_DEBUG ( );
}
// overriding draw method
void CCParticleSystemQuad::draw()
{
CCAssert(!m_pBatchNode,"draw should not be called when added to a particleBatchNode");
CC_NODE_DRAW_SETUP();
ccGLBindTexture2D( m_pTexture->getName() );
ccGLBlendFunc( m_tBlendFunc.src, m_tBlendFunc.dst );
CCAssert( m_uParticleIdx == m_uParticleCount, "Abnormal error in particle quad");
#if CC_TEXTURE_ATLAS_USE_VAO
//
// Using VBO and VAO
//
glBindVertexArray( m_uVAOname );
#if CC_REBIND_INDICES_BUFFER
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, m_pBuffersVBO[1]);
#endif
glDrawElements(GL_TRIANGLES, (GLsizei) m_uParticleIdx*6, GL_UNSIGNED_SHORT, 0);
#if CC_REBIND_INDICES_BUFFER
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
#endif
glBindVertexArray( 0 );
#else
//
// Using VBO without VAO
//
//#define kQuadSize sizeof(m_pQuads[0].bl)
ccGLEnableVertexAttribs( kCCVertexAttribFlag_PosColorTex );
glBindBuffer(GL_ARRAY_BUFFER, m_pBuffersVBO[0]);
// vertices
//glVertexAttribPointer(kCCVertexAttrib_Position, 3, GL_FLOAT, GL_FALSE, kQuadSize, (GLvoid*) offsetof( ccV3F_C4B_T2F, vertices));
// colors
//glVertexAttribPointer(kCCVertexAttrib_Color, 4, GL_UNSIGNED_BYTE, GL_TRUE, kQuadSize, (GLvoid*) offsetof( ccV3F_C4B_T2F, colors));
// tex coords
//glVertexAttribPointer(kCCVertexAttrib_TexCoords, 2, GL_FLOAT, GL_FALSE, kQuadSize, (GLvoid*) offsetof( ccV3F_C4B_T2F, texCoords));
ccGLVertexAttribPointer ( kCCVertexAttrib_Position , 3, GL_FLOAT , GL_FALSE, kQuadSize, (GLvoid*) offsetof ( ccV3F_C4B_T2F, vertices ) );
ccGLVertexAttribPointer ( kCCVertexAttrib_Color , 4, GL_UNSIGNED_BYTE, GL_TRUE , kQuadSize, (GLvoid*) offsetof ( ccV3F_C4B_T2F, colors ) );
ccGLVertexAttribPointer ( kCCVertexAttrib_TexCoords, 2, GL_FLOAT , GL_FALSE, kQuadSize, (GLvoid*) offsetof ( ccV3F_C4B_T2F, texCoords ) );
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, m_pBuffersVBO[1]);
glDrawElements(GL_TRIANGLES, (GLsizei) m_uParticleIdx*6, GL_UNSIGNED_SHORT, 0);
glBindBuffer(GL_ARRAY_BUFFER, 0);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
#endif
CC_INCREMENT_GL_DRAWS(1);
CHECK_GL_ERROR_DEBUG();
}
