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Graphics Buffers can be used as Shader Storage Buffers.

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This commit is contained in:
Alex Szpakowski
2021-01-10 17:53:12 -04:00
parent 6fede802b3
commit 50ff86bd92
15 changed files with 451 additions and 68 deletions
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src/modules/graphics/opengl/Graphics.cpp
+19 -3
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@@ -345,7 +345,19 @@ bool Graphics::setMode(int width, int height, int pixelwidth, int pixelheight, b
const float texel[] = {0.0f, 0.0f, 0.0f, 1.0f};
love::graphics::Buffer *buffer = newBuffer(settings, format, texel, sizeof(texel), 1);
auto buffer = newBuffer(settings, format, texel, sizeof(texel), 1);
defaultBuffers[BUFFERTYPE_TEXEL].set(buffer, Acquire::NORETAIN);
}
if (capabilities.features[FEATURE_GLSL4] && defaultBuffers[BUFFERTYPE_SHADER_STORAGE].get() == nullptr)
{
Buffer::Settings settings(Buffer::TYPEFLAG_SHADER_STORAGE, BUFFERUSAGE_STATIC);
std::vector<Buffer::DataDeclaration> format = {{"", DATAFORMAT_FLOAT, 0}};
std::vector<float> data;
data.resize(Buffer::SHADER_STORAGE_BUFFER_MAX_STRIDE / 4);
auto buffer = newBuffer(settings, format, data.data(), data.size() * sizeof(float), data.size());
defaultBuffers[BUFFERTYPE_TEXEL].set(buffer, Acquire::NORETAIN);
}
@@ -359,6 +371,9 @@ bool Graphics::setMode(int width, int height, int pixelwidth, int pixelheight, b
if (defaultBuffers[BUFFERTYPE_TEXEL].get())
gl.setDefaultTexelBuffer((GLuint) defaultBuffers[BUFFERTYPE_TEXEL]->getTexelBufferHandle());
if (defaultBuffers[BUFFERTYPE_SHADER_STORAGE].get())
gl.setDefaultStorageBuffer((GLuint) defaultBuffers[BUFFERTYPE_SHADER_STORAGE]->getHandle());
// Reload all volatile objects.
if (!Volatile::loadAll())
::printf("Could not reload all volatile objects.\n");
@@ -1515,7 +1530,7 @@ void Graphics::initCapabilities()
capabilities.features[FEATURE_GLSL3] = GLAD_ES_VERSION_3_0 || gl.isCoreProfile();
capabilities.features[FEATURE_GLSL4] = GLAD_ES_VERSION_3_1 || (gl.isCoreProfile() && GLAD_VERSION_4_3);
capabilities.features[FEATURE_INSTANCING] = gl.isInstancingSupported();
capabilities.features[FEATURE_TEXEL_BUFFER] = gl.areTexelBuffersSupported();
capabilities.features[FEATURE_TEXEL_BUFFER] = gl.isBufferTypeSupported(BUFFERTYPE_TEXEL);
static_assert(FEATURE_MAX_ENUM == 11, "Graphics::initCapabilities must be updated when adding a new graphics feature!");
capabilities.limits[LIMIT_POINT_SIZE] = gl.getMaxPointSize();
@@ -1524,10 +1539,11 @@ void Graphics::initCapabilities()
capabilities.limits[LIMIT_VOLUME_TEXTURE_SIZE] = gl.getMax3DTextureSize();
capabilities.limits[LIMIT_CUBE_TEXTURE_SIZE] = gl.getMaxCubeTextureSize();
capabilities.limits[LIMIT_TEXEL_BUFFER_SIZE] = gl.getMaxTexelBufferSize();
capabilities.limits[LIMIT_SHADER_STORAGE_BUFFER_SIZE] = gl.getMaxShaderStorageBufferSize();
capabilities.limits[LIMIT_RENDER_TARGETS] = gl.getMaxRenderTargets();
capabilities.limits[LIMIT_TEXTURE_MSAA] = gl.getMaxSamples();
capabilities.limits[LIMIT_ANISOTROPY] = gl.getMaxAnisotropy();
static_assert(LIMIT_MAX_ENUM == 9, "Graphics::initCapabilities must be updated when adding a new system limit!");
static_assert(LIMIT_MAX_ENUM == 10, "Graphics::initCapabilities must be updated when adding a new system limit!");
for (int i = 0; i < TEXTURE_MAX_ENUM; i++)
capabilities.textureTypes[i] = gl.isTextureTypeSupported((TextureType) i);