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Added GL vertex array object support.

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This commit is contained in:
bkaradzic 2013-01-12 19:13:51 -08:00
parent 3a251fbc02
commit 9e562eed97
5 changed files with 230 additions and 84 deletions
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1
README.md
View file

@ -206,7 +206,6 @@ Todo
- OSX and iOS platforms.
- DX11: MSAA.
- GL: MSAA.
- GL: ARB_vertex_array_object + OES_vertex_array_object.
Notice
------

4
src/glimports.h
View file

@ -154,6 +154,10 @@ GL_IMPORT(true, PFNGLGETTRANSLATEDSHADERSOURCEANGLEPROC, glGetTranslatedShaderS
GL_IMPORT(true, PFNGLGETPROGRAMBINARYOESPROC, glGetProgramBinaryOES);
GL_IMPORT(true, PFNGLPROGRAMBINARYOESPROC, glProgramBinaryOES);
GL_IMPORT(true, PFNGLBINDVERTEXARRAYOESPROC, glBindVertexArray);
GL_IMPORT(true, PFNGLDELETEVERTEXARRAYSOESPROC, glDeleteVertexArrays);
GL_IMPORT(true, PFNGLGENVERTEXARRAYSOESPROC, glGenVertexArrays);
#endif // BGFX_CONFIG_RENDERER_
#if !BGFX_CONFIG_RENDERER_OPENGLES3

106
src/renderer_gl.cpp
View file

@ -10,20 +10,6 @@
# include <bx/timer.h>
# include <bx/uint32_t.h>
#if !BGFX_CONFIG_RENDERER_OPENGL
# define glClearDepth glClearDepthf
#endif // !BGFX_CONFIG_RENDERER_OPENGL
#if BGFX_CONFIG_RENDERER_OPENGLES2
# define glProgramBinary glProgramBinaryOES
# define glGetProgramBinary glGetProgramBinaryOES
# define GL_PROGRAM_BINARY_LENGTH GL_PROGRAM_BINARY_LENGTH_OES
# define GL_HALF_FLOAT GL_HALF_FLOAT_OES
# define GL_RGB10_A2 GL_RGB10_A2_EXT
# define GL_UNSIGNED_INT_2_10_10_10_REV GL_UNSIGNED_INT_2_10_10_10_REV_EXT
# define GL_SAMPLER_3D GL_SAMPLER_3D_OES
#endif // BGFX_CONFIG_RENDERER_OPENGLES2
namespace bgfx
{
struct Extension
@ -64,6 +50,7 @@ namespace bgfx
OES_vertex_type_10_10_10_2,
EXT_occlusion_query_boolean,
ARB_vertex_array_object,
OES_vertex_array_object,
ATI_meminfo,
NVX_gpu_memory_info,
@ -111,6 +98,7 @@ namespace bgfx
{ "GL_OES_vertex_type_10_10_10_2", false, true },
{ "GL_EXT_occlusion_query_boolean", false, true },
{ "GL_ARB_vertex_array_object", false, true },
{ "OES_vertex_array_object", false, true },
{ "GL_ATI_meminfo", false, true },
{ "GL_NVX_gpu_memory_info", false, true },
};
@ -187,6 +175,7 @@ namespace bgfx
, m_captureSize(0)
, m_maxAnisotropy(0.0f)
, m_dxtSupport(false)
, m_vaoSupport(false)
, m_programBinarySupport(false)
, m_textureSwizzleSupport(false)
, m_flip(false)
@ -613,6 +602,11 @@ namespace bgfx
}
}
void invalidateCache()
{
m_vaoCache.invalidate();
}
void updateCapture()
{
if (m_resolution.m_flags&BGFX_RESET_CAPTURE)
@ -695,6 +689,8 @@ namespace bgfx
void shutdown()
{
invalidateCache();
#if BGFX_CONFIG_RENDERER_OPENGL
m_queries.destroy();
#endif // BGFX_CONFIG_RENDERER_OPENGL
@ -731,6 +727,8 @@ namespace bgfx
Queries m_queries;
#endif // BGFX_CONFIG_RENDERER_OPENGL
VaoCache m_vaoCache;
TextVideoMem m_textVideoMem;
Resolution m_resolution;
@ -738,6 +736,7 @@ namespace bgfx
uint32_t m_captureSize;
float m_maxAnisotropy;
bool m_dxtSupport;
bool m_vaoSupport;
bool m_programBinarySupport;
bool m_textureSwizzleSupport;
bool m_flip;
@ -2054,6 +2053,11 @@ namespace bgfx
void TextVideoMemBlitter::setup()
{
if (s_renderCtx.m_vaoSupport)
{
GL_CHECK(glBindVertexArray(0) );
}
uint32_t width = s_renderCtx.m_resolution.m_width;
uint32_t height = s_renderCtx.m_resolution.m_height;
@ -2223,6 +2227,11 @@ namespace bgfx
s_extension[Extension::EXT_texture_compression_s3tc].m_supported
;
s_renderCtx.m_vaoSupport = !!BGFX_CONFIG_RENDERER_OPENGLES3
|| s_extension[Extension::ARB_vertex_array_object].m_supported
|| s_extension[Extension::OES_vertex_array_object].m_supported
;
s_renderCtx.m_programBinarySupport = !!BGFX_CONFIG_RENDERER_OPENGLES3
|| s_extension[Extension::ARB_get_program_binary].m_supported
|| s_extension[Extension::OES_get_program_binary].m_supported
@ -2903,7 +2912,70 @@ namespace bgfx
}
}
if (currentState.m_vertexBuffer.idx != state.m_vertexBuffer.idx || programChanged)
if (s_renderCtx.m_vaoSupport)
{
if (programChanged
|| currentState.m_vertexBuffer.idx != state.m_vertexBuffer.idx
|| baseVertex != state.m_startVertex
|| currentState.m_indexBuffer.idx != state.m_indexBuffer.idx)
{
uint64_t hash = (uint64_t(state.m_vertexBuffer.idx)<<48)
| (uint64_t(state.m_indexBuffer.idx)<<32)
| (uint64_t(state.m_instanceDataBuffer.idx)<<16)
| programIdx
;
hash ^= state.m_startVertex;
currentState.m_vertexBuffer = state.m_vertexBuffer;
currentState.m_indexBuffer = state.m_indexBuffer;
baseVertex = state.m_startVertex;
GLuint id = s_renderCtx.m_vaoCache.find(hash);
if (UINT32_MAX != id)
{
GL_CHECK(glBindVertexArray(id) );
}
else
{
id = s_renderCtx.m_vaoCache.add(hash);
GL_CHECK(glBindVertexArray(id) );
if (invalidHandle != state.m_vertexBuffer.idx)
{
VertexBuffer& vb = s_renderCtx.m_vertexBuffers[state.m_vertexBuffer.idx];
GL_CHECK(glBindBuffer(GL_ARRAY_BUFFER, vb.m_id) );
uint16_t decl = vb.m_decl.idx == invalidHandle ? state.m_vertexDecl.idx : vb.m_decl.idx;
const Program& program = s_renderCtx.m_program[programIdx];
program.bindAttributes(s_renderCtx.m_vertexDecls[decl], state.m_startVertex);
if (invalidHandle != state.m_instanceDataBuffer.idx)
{
GL_CHECK(glBindBuffer(GL_ARRAY_BUFFER, s_renderCtx.m_vertexBuffers[state.m_instanceDataBuffer.idx].m_id) );
program.bindInstanceData(state.m_instanceDataStride, state.m_instanceDataOffset);
}
}
else
{
GL_CHECK(glBindBuffer(GL_ARRAY_BUFFER, 0) );
}
if (invalidHandle != state.m_indexBuffer.idx)
{
IndexBuffer& ib = s_renderCtx.m_indexBuffers[state.m_indexBuffer.idx];
GL_CHECK(glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, ib.m_id) );
}
else
{
GL_CHECK(glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0) );
}
}
}
}
else
{
if (programChanged
|| currentState.m_vertexBuffer.idx != state.m_vertexBuffer.idx)
{
currentState.m_vertexBuffer = state.m_vertexBuffer;
@ -2953,7 +3025,11 @@ namespace bgfx
program.bindInstanceData(state.m_instanceDataStride, state.m_instanceDataOffset);
}
}
}
}
if (invalidHandle != currentState.m_vertexBuffer.idx)
{
uint32_t numVertices = state.m_numVertices;
if (UINT32_C(0xffffffff) == numVertices)
{

67
src/renderer_gl.h
View file

@ -196,6 +196,23 @@ typedef void (APIENTRYP PFNGLSTENCILOPPROC) (GLenum fail, GLenum zfail, GLenum z
# define GL_APIENTRYP GL_APIENTRY*
#endif // GL_APIENTRYP
#if !BGFX_CONFIG_RENDERER_OPENGL
# define glClearDepth glClearDepthf
#endif // !BGFX_CONFIG_RENDERER_OPENGL
#if BGFX_CONFIG_RENDERER_OPENGLES2
# define glProgramBinary glProgramBinaryOES
# define glGetProgramBinary glGetProgramBinaryOES
# define glBindVertexArray glBindVertexArrayOES
# define glDeleteVertexArrays glDeleteVertexArraysOES
# define glGenVertexArrays glGenVertexArraysOES
# define GL_PROGRAM_BINARY_LENGTH GL_PROGRAM_BINARY_LENGTH_OES
# define GL_HALF_FLOAT GL_HALF_FLOAT_OES
# define GL_RGB10_A2 GL_RGB10_A2_EXT
# define GL_UNSIGNED_INT_2_10_10_10_REV GL_UNSIGNED_INT_2_10_10_10_REV_EXT
# define GL_SAMPLER_3D GL_SAMPLER_3D_OES
#endif // BGFX_CONFIG_RENDERER_OPENGLES2
namespace bgfx
{
typedef void (GL_APIENTRYP PFNGLVERTEXATTRIBDIVISORBGFXPROC)(GLuint _index, GLuint _divisor);
@ -331,6 +348,56 @@ namespace bgfx
VertexDeclHandle m_decl;
};
class VaoCache
{
public:
GLuint add(uint64_t _hash)
{
invalidate(_hash);
GLuint arrayId;
GL_CHECK(glGenVertexArrays(1, &arrayId) );
m_hashMap.insert(stl::make_pair(_hash, arrayId) );
return arrayId;
}
GLuint find(uint64_t _hash)
{
HashMap::iterator it = m_hashMap.find(_hash);
if (it != m_hashMap.end() )
{
return it->second;
}
return UINT32_MAX;
}
void invalidate(uint64_t _hash)
{
HashMap::iterator it = m_hashMap.find(_hash);
if (it != m_hashMap.end() )
{
GL_CHECK(glDeleteVertexArrays(1, &it->second) );
m_hashMap.erase(it);
}
}
void invalidate()
{
for (HashMap::iterator it = m_hashMap.begin(), itEnd = m_hashMap.end(); it != itEnd; ++it)
{
GL_CHECK(glDeleteVertexArrays(1, &it->second) );
}
m_hashMap.clear();
}
private:
typedef stl::unordered_map<uint64_t, GLuint> HashMap;
HashMap m_hashMap;
};
struct Texture
{
Texture()