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GPU/OpenGL: Also check number of fragment storage blocks

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This commit is contained in:
Connor McLaughlin 2021-03-08 11:40:34 +10:00
parent 9eae20128d
commit a559139105
1 changed files with 7 additions and 1 deletions
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8
src/core/gpu_hw_opengl.cpp
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@ -337,12 +337,18 @@ void GPU_HW_OpenGL::SetCapabilities(HostDisplay* host_display)
if (!m_supports_texture_buffer || m_max_texture_buffer_size < VRAM_WIDTH * VRAM_HEIGHT)
{
// Try SSBOs.
GLint max_fragment_storage_blocks = 0;
GLint64 max_ssbo_size = 0;
if (GLAD_GL_VERSION_4_3 || GLAD_GL_ES_VERSION_3_1 || GLAD_GL_ARB_shader_storage_buffer_object)
{
glGetIntegerv(GL_MAX_FRAGMENT_SHADER_STORAGE_BLOCKS, &max_fragment_storage_blocks);
glGetInteger64v(GL_MAX_SHADER_STORAGE_BLOCK_SIZE, &max_ssbo_size);
}
Log_InfoPrintf("Max fragment shader storage blocks: %d", max_fragment_storage_blocks);
Log_InfoPrintf("Max shader storage buffer size: %" PRId64, max_ssbo_size);
m_use_ssbo_for_vram_writes = (max_ssbo_size >= static_cast<GLint64>(VRAM_WIDTH * VRAM_HEIGHT * sizeof(u16)));
m_use_ssbo_for_vram_writes = (max_fragment_storage_blocks > 0 &&
max_ssbo_size >= static_cast<GLint64>(VRAM_WIDTH * VRAM_HEIGHT * sizeof(u16)));
if (m_use_ssbo_for_vram_writes)
{
Log_InfoPrintf("Using shader storage buffers for VRAM writes.");