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Added blend equation support.

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bkaradzic
2013-06-17 22:11:45 -07:00
parent 1f4539ec7c
commit 87dfe979a5
5 changed files with 107 additions and 23 deletions
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36
src/renderer_gl.cpp
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@@ -62,6 +62,8 @@ namespace bgfx
OES_rgb8_rgba8,
EXT_texture_storage,
EXT_blend_color,
EXT_blend_subtract,
EXT_blend_minmax,
ARB_debug_output,
Count
@@ -118,6 +120,8 @@ namespace bgfx
{ "GL_OES_rgb8_rgba8", false, true },
{ "GL_EXT_texture_storage", false, true },
{ "GL_EXT_blend_color", BGFX_CONFIG_RENDERER_OPENGL >= 31, true },
{ "GL_EXT_blend_subtract", BGFX_CONFIG_RENDERER_OPENGL >= 31, true },
{ "GL_EXT_blend_minmax", BGFX_CONFIG_RENDERER_OPENGL >= 31, true },
{ "GL_ARB_debug_output", BGFX_CONFIG_RENDERER_OPENGL >= 43, true },
};
@@ -709,6 +713,15 @@ namespace bgfx
{ GL_ONE_MINUS_CONSTANT_COLOR, GL_ONE_MINUS_CONSTANT_COLOR, true },
};
static const GLenum s_blendEquation[] =
{
GL_FUNC_ADD,
GL_FUNC_SUBTRACT,
GL_FUNC_REVERSE_SUBTRACT,
GL_MIN,
GL_MAX,
};
static const GLenum s_depthFunc[] =
{
0, // ignored
@@ -2597,7 +2610,7 @@ namespace bgfx
void Context::rendererSetMarker(const char* _marker, uint32_t /*_size*/)
{
GREMEDY_SETMARKER(_marker);
GREMEDY_SETMARKER(_marker);
}
void Context::rendererSubmit()
@@ -2762,10 +2775,19 @@ namespace bgfx
}
}
if ( (BGFX_STATE_CULL_MASK|BGFX_STATE_DEPTH_WRITE|BGFX_STATE_DEPTH_TEST_MASK
|BGFX_STATE_ALPHA_MASK|BGFX_STATE_RGB_WRITE|BGFX_STATE_BLEND_MASK
|BGFX_STATE_ALPHA_REF_MASK|BGFX_STATE_PT_MASK|BGFX_STATE_POINT_SIZE_MASK
|BGFX_STATE_MSAA) & changedFlags)
if ( (0
| BGFX_STATE_CULL_MASK
| BGFX_STATE_DEPTH_WRITE
| BGFX_STATE_DEPTH_TEST_MASK
| BGFX_STATE_ALPHA_MASK
| BGFX_STATE_RGB_WRITE
| BGFX_STATE_BLEND_MASK
| BGFX_STATE_BLEND_EQUATION_MASK
| BGFX_STATE_ALPHA_REF_MASK
| BGFX_STATE_PT_MASK
| BGFX_STATE_POINT_SIZE_MASK
| BGFX_STATE_MSAA
) & changedFlags)
{
if (BGFX_STATE_CULL_MASK & changedFlags)
{
@@ -2838,15 +2860,17 @@ namespace bgfx
GL_CHECK(glColorMask(rgb, rgb, rgb, alpha) );
}
if (BGFX_STATE_BLEND_MASK & changedFlags)
if ( (BGFX_STATE_BLEND_MASK|BGFX_STATE_BLEND_EQUATION_MASK) & changedFlags)
{
if (BGFX_STATE_BLEND_MASK & newFlags)
{
uint32_t blend = (newFlags&BGFX_STATE_BLEND_MASK)>>BGFX_STATE_BLEND_SHIFT;
uint32_t equation = (newFlags&BGFX_STATE_BLEND_EQUATION_MASK)>>BGFX_STATE_BLEND_EQUATION_SHIFT;
uint32_t src = blend&0xf;
uint32_t dst = (blend>>4)&0xf;
GL_CHECK(glEnable(GL_BLEND) );
GL_CHECK(glBlendFunc(s_blendFactor[src].m_src, s_blendFactor[dst].m_dst) );
GL_CHECK(glBlendEquation(s_blendEquation[equation]) );
if ( (s_blendFactor[src].m_factor || s_blendFactor[dst].m_factor)
&& blendFactor != state.m_rgba)