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Initial support for writing to textures in compute shaders.

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This commit is contained in:
Alex Szpakowski
2021-08-13 14:43:03 -03:00
parent cffd485976
commit a551fcd492
14 changed files with 383 additions and 50 deletions
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src/modules/graphics/opengl/OpenGL.cpp
+47 -1
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@@ -292,7 +292,7 @@ void OpenGL::setupContext()
// This can't be done in initContext with the rest of the bug checks because
// isPixelFormatSupported relies on state initialized here / after init.
auto gfx = Module::getInstance<Graphics>(Module::M_GRAPHICS);
if (GLAD_ES_VERSION_3_0 && gfx != nullptr && !gfx->isPixelFormatSupported(PIXELFORMAT_R8_UNORM, true, true))
if (GLAD_ES_VERSION_3_0 && gfx != nullptr && !gfx->isPixelFormatSupported(PIXELFORMAT_R8_UNORM, PIXELFORMATUSAGEFLAGS_SAMPLE | PIXELFORMATUSAGEFLAGS_RENDERTARGET))
bugs.brokenR8PixelFormat = true;
#endif
}
@@ -2085,6 +2085,7 @@ uint32 OpenGL::getPixelFormatUsageFlags(PixelFormat pixelformat)
{
const uint32 commonsample = PIXELFORMATUSAGEFLAGS_SAMPLE | PIXELFORMATUSAGEFLAGS_LINEAR;
const uint32 commonrender = PIXELFORMATUSAGEFLAGS_RENDERTARGET | PIXELFORMATUSAGEFLAGS_BLEND | PIXELFORMATUSAGEFLAGS_MSAA;
const uint32 computewrite = PIXELFORMATUSAGEFLAGS_COMPUTEWRITE;
uint32 flags = PIXELFORMATUSAGEFLAGS_NONE;
@@ -2096,11 +2097,15 @@ uint32 OpenGL::getPixelFormatUsageFlags(PixelFormat pixelformat)
flags |= commonsample | commonrender;
else if (pixelformat == PIXELFORMAT_R8_UNORM && (GLAD_ES_VERSION_2_0 || GLAD_VERSION_1_1))
flags |= commonsample; // We'll use OpenGL's luminance format internally.
if (GLAD_VERSION_4_3)
flags |= computewrite;
break;
case PIXELFORMAT_RGBA8_UNORM:
flags |= commonsample;
if (GLAD_VERSION_1_0 || GLAD_ES_VERSION_3_0 || GLAD_OES_rgb8_rgba8 || GLAD_ARM_rgba8)
flags |= commonrender;
if (GLAD_VERSION_4_3 || GLAD_ES_VERSION_3_1)
flags |= computewrite;
break;
case PIXELFORMAT_sRGBA8_UNORM:
if (gl.bugs.brokenSRGB)
@@ -2110,6 +2115,8 @@ uint32 OpenGL::getPixelFormatUsageFlags(PixelFormat pixelformat)
if (GLAD_ES_VERSION_3_0 || GLAD_VERSION_3_0
|| ((GLAD_ARB_framebuffer_sRGB || GLAD_EXT_framebuffer_sRGB) && (GLAD_VERSION_2_1 || GLAD_EXT_texture_sRGB)))
flags |= commonrender;
if (GLAD_VERSION_4_3 || GLAD_ES_VERSION_3_1)
flags |= computewrite;
break;
case PIXELFORMAT_R16_UNORM:
case PIXELFORMAT_RG16_UNORM:
@@ -2117,10 +2124,14 @@ uint32 OpenGL::getPixelFormatUsageFlags(PixelFormat pixelformat)
|| (GLAD_VERSION_1_1 && GLAD_ARB_texture_rg)
|| (GLAD_EXT_texture_norm16 && (GLAD_ES_VERSION_3_0 || GLAD_EXT_texture_rg)))
flags |= commonsample | commonrender;
if (GLAD_VERSION_4_3)
flags |= computewrite;
break;
case PIXELFORMAT_RGBA16_UNORM:
if (GLAD_VERSION_1_1 || GLAD_EXT_texture_norm16)
flags |= commonsample | commonrender;
if (GLAD_VERSION_4_3)
flags |= computewrite;
break;
case PIXELFORMAT_R16_FLOAT:
case PIXELFORMAT_RG16_FLOAT:
@@ -2132,6 +2143,8 @@ uint32 OpenGL::getPixelFormatUsageFlags(PixelFormat pixelformat)
flags |= commonrender;
if (!(GLAD_VERSION_1_1 || GLAD_ES_VERSION_3_0 || GLAD_OES_texture_half_float_linear))
flags &= ~PIXELFORMATUSAGEFLAGS_LINEAR;
if (GLAD_VERSION_4_3)
flags |= computewrite;
break;
case PIXELFORMAT_RGBA16_FLOAT:
if (GLAD_VERSION_3_0 || (GLAD_VERSION_1_0 && GLAD_ARB_texture_float && GLAD_ARB_half_float_pixel))
@@ -2142,8 +2155,13 @@ uint32 OpenGL::getPixelFormatUsageFlags(PixelFormat pixelformat)
flags |= commonrender;
if (!(GLAD_VERSION_1_1 || GLAD_ES_VERSION_3_0 || GLAD_OES_texture_half_float_linear))
flags &= ~PIXELFORMATUSAGEFLAGS_LINEAR;
if (GLAD_VERSION_4_3 || GLAD_ES_VERSION_3_1)
flags |= computewrite;
break;
case PIXELFORMAT_R32_FLOAT:
if (GLAD_ES_VERSION_3_1)
flags |= computewrite;
// Fallthrough.
case PIXELFORMAT_RG32_FLOAT:
if (GLAD_VERSION_3_0 || (GLAD_VERSION_1_0 && GLAD_ARB_texture_float && GLAD_ARB_texture_rg))
flags |= commonsample | commonrender;
@@ -2151,6 +2169,8 @@ uint32 OpenGL::getPixelFormatUsageFlags(PixelFormat pixelformat)
flags |= commonsample;
if (!(GLAD_VERSION_1_1 || GLAD_ES_VERSION_3_0 || GLAD_OES_texture_half_float_linear))
flags &= ~PIXELFORMATUSAGEFLAGS_LINEAR;
if (GLAD_VERSION_4_3)
flags |= computewrite;
break;
case PIXELFORMAT_RGBA32_FLOAT:
if (GLAD_VERSION_3_0 || (GLAD_VERSION_1_0 && GLAD_ARB_texture_float))
@@ -2159,6 +2179,8 @@ uint32 OpenGL::getPixelFormatUsageFlags(PixelFormat pixelformat)
flags |= commonsample;
if (!(GLAD_VERSION_1_1 || GLAD_OES_texture_float_linear))
flags &= ~PIXELFORMATUSAGEFLAGS_LINEAR;
if (GLAD_VERSION_4_3 || GLAD_ES_VERSION_3_1)
flags |= computewrite;
break;
case PIXELFORMAT_R8_INT:
@@ -2181,6 +2203,26 @@ uint32 OpenGL::getPixelFormatUsageFlags(PixelFormat pixelformat)
case PIXELFORMAT_RGBA32_UINT:
if (GLAD_VERSION_3_0 || GLAD_ES_VERSION_3_0)
flags |= PIXELFORMATUSAGEFLAGS_SAMPLE | PIXELFORMATUSAGEFLAGS_RENDERTARGET;
if (GLAD_VERSION_4_3)
flags |= computewrite;
if (GLAD_ES_VERSION_3_1)
{
switch (pixelformat)
{
case PIXELFORMAT_RGBA8_INT:
case PIXELFORMAT_RGBA8_UINT:
case PIXELFORMAT_RGBA16_INT:
case PIXELFORMAT_RGBA16_UINT:
case PIXELFORMAT_R32_INT:
case PIXELFORMAT_R32_UINT:
case PIXELFORMAT_RGBA32_INT:
case PIXELFORMAT_RGBA32_UINT:
flags |= computewrite;
break;
default:
break;
}
}
break;
case PIXELFORMAT_LA8_UNORM:
@@ -2198,12 +2240,16 @@ uint32 OpenGL::getPixelFormatUsageFlags(PixelFormat pixelformat)
case PIXELFORMAT_RGB10A2_UNORM:
if (GLAD_ES_VERSION_3_0 || GLAD_VERSION_1_0)
flags |= commonsample | commonrender;
if (GLAD_VERSION_4_3)
flags |= computewrite;
break;
case PIXELFORMAT_RG11B10_FLOAT:
if (GLAD_VERSION_3_0 || GLAD_EXT_packed_float || GLAD_APPLE_texture_packed_float)
flags |= commonsample;
if (GLAD_VERSION_3_0 || GLAD_EXT_packed_float || GLAD_APPLE_color_buffer_packed_float)
flags |= commonrender;
if (GLAD_VERSION_4_3)
flags |= computewrite;
break;
case PIXELFORMAT_STENCIL8: