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draw hardware buffers with glDrawRangeElements

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This commit is contained in:
Chris Danford
2004-04-15 05:02:35 +00:00
parent c93ac846dd
commit feb14c6b84
1 changed files with 24 additions and 13 deletions
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stepmania/src/RageDisplay_OGL.cpp
+24 -13
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@@ -51,6 +51,7 @@ namespace GLExt {
extern PFNGLBINDBUFFERARBPROC glBindBufferARB;
extern PFNGLBUFFERDATAARBPROC glBufferDataARB;
extern PFNGLDELETEBUFFERSARBPROC glDeleteBuffersARB;
extern PFNGLDRAWRANGEELEMENTSPROC glDrawRangeElements;
};
#if defined(DARWIN)
@@ -92,6 +93,7 @@ PFNGLGENBUFFERSARBPROC GLExt::glGenBuffersARB = NULL;
PFNGLBINDBUFFERARBPROC GLExt::glBindBufferARB = NULL;
PFNGLBUFFERDATAARBPROC GLExt::glBufferDataARB = NULL;
PFNGLDELETEBUFFERSARBPROC GLExt::glDeleteBuffersARB = NULL;
PFNGLDRAWRANGEELEMENTSPROC GLExt::glDrawRangeElements = NULL;
static bool g_bEXT_texture_env_combine = true;
static bool g_bGL_EXT_bgra = true;
@@ -659,6 +661,7 @@ void SetupExtensions()
GLExt::glBindBufferARB = (PFNGLBINDBUFFERARBPROC) wind->GetProcAddress("glBindBufferARB");
GLExt::glBufferDataARB = (PFNGLBUFFERDATAARBPROC) wind->GetProcAddress("glBufferDataARB");
GLExt::glDeleteBuffersARB = (PFNGLDELETEBUFFERSARBPROC) wind->GetProcAddress("glDeleteBuffersARB");
GLExt::glDrawRangeElements = (PFNGLDRAWRANGEELEMENTSPROC) wind->GetProcAddress("glDrawRangeElements");
g_bEXT_texture_env_combine = HasExtension("GL_EXT_texture_env_combine");
g_bGL_EXT_bgra = HasExtension("GL_EXT_bgra");
CheckPalettedTextures( false );
@@ -1067,19 +1070,19 @@ public:
GLExt::glBindBufferARB( GL_ARRAY_BUFFER_ARB, m_nPositions );
GLExt::glBufferDataARB( GL_ARRAY_BUFFER_ARB, m_sizeVerts*sizeof(RageVector3), m_pPosition, GL_STATIC_DRAW_ARB );
AssertNoGLError();
// AssertNoGLError();
GLExt::glBindBufferARB( GL_ARRAY_BUFFER_ARB, m_nTextureCoords );
GLExt::glBufferDataARB( GL_ARRAY_BUFFER_ARB, m_sizeVerts*sizeof(RageVector2), m_pTexture, GL_STATIC_DRAW_ARB );
AssertNoGLError();
// AssertNoGLError();
GLExt::glBindBufferARB( GL_ARRAY_BUFFER_ARB, m_nNormals );
GLExt::glBufferDataARB( GL_ARRAY_BUFFER_ARB, m_sizeVerts*sizeof(RageVector3), m_pNormal, GL_STATIC_DRAW_ARB );
AssertNoGLError();
// AssertNoGLError();
GLExt::glBindBufferARB( GL_ELEMENT_ARRAY_BUFFER_ARB, m_nTriangles );
GLExt::glBufferDataARB( GL_ELEMENT_ARRAY_BUFFER_ARB, m_sizeTriangles*sizeof(msTriangle), m_pTriangles, GL_STATIC_DRAW_ARB );
AssertNoGLError();
// AssertNoGLError();
GLExt::glBindBufferARB( GL_ARRAY_BUFFER_ARB, 0 );
GLExt::glBindBufferARB( GL_ELEMENT_ARRAY_BUFFER_ARB, 0 );
@@ -1093,29 +1096,37 @@ public:
glEnableClientState(GL_VERTEX_ARRAY);
GLExt::glBindBufferARB( GL_ARRAY_BUFFER_ARB, m_nPositions );
AssertNoGLError();
// AssertNoGLError();
glVertexPointer(3, GL_FLOAT, 0, NULL );
AssertNoGLError();
// AssertNoGLError();
glDisableClientState(GL_COLOR_ARRAY);
glEnableClientState(GL_TEXTURE_COORD_ARRAY);
GLExt::glBindBufferARB( GL_ARRAY_BUFFER_ARB, m_nTextureCoords );
AssertNoGLError();
// AssertNoGLError();
glTexCoordPointer(2, GL_FLOAT, 0, NULL);
AssertNoGLError();
// AssertNoGLError();
glEnableClientState(GL_NORMAL_ARRAY);
GLExt::glBindBufferARB( GL_ARRAY_BUFFER_ARB, m_nNormals );
AssertNoGLError();
// AssertNoGLError();
glNormalPointer(GL_FLOAT, 0, NULL);
AssertNoGLError();
// AssertNoGLError();
GLExt::glBindBufferARB( GL_ELEMENT_ARRAY_BUFFER_ARB, m_nTriangles );
AssertNoGLError();
// AssertNoGLError();
glDrawElements( GL_TRIANGLES, m_sizeTriangles*3, GL_UNSIGNED_SHORT, 0 ); //last 0 is offset in element-array
AssertNoGLError();
#define BUFFER_OFFSET(o) o
GLExt::glDrawRangeElements(
GL_TRIANGLES,
0, // minimum array index contained in indices
m_sizeVerts-1, // maximum array index contained in indices
m_sizeTriangles*3, // number of elements to be rendered
GL_UNSIGNED_SHORT, //
0 );
// AssertNoGLError();
GLExt::glBindBufferARB( GL_ARRAY_BUFFER_ARB, 0 );
GLExt::glBindBufferARB( GL_ELEMENT_ARRAY_BUFFER_ARB, 0 );