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GPU/HW: Fix mask bit when rendering with transparency and no DSB

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Fixes some sprites in Bloody Roar on Mali GPUs.
This commit is contained in:
Connor McLaughlin
2021-02-06 20:05:57 +10:00
parent 011df33fc4
commit 837fb6128b
6 changed files with 69 additions and 48 deletions
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14
src/core/gpu_hw_opengl.cpp
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@ -361,8 +361,6 @@ void GPU_HW_OpenGL::SetCapabilities(HostDisplay* host_display)
m_supports_dual_source_blend =
(max_dual_source_draw_buffers > 0) &&
(GLAD_GL_VERSION_3_3 || GLAD_GL_ARB_blend_func_extended || GLAD_GL_EXT_blend_func_extended);
if (!m_supports_dual_source_blend)
Log_WarningPrintf("Dual-source blending is not supported, this may break some mask effects.");
m_supports_geometry_shaders =
GLAD_GL_VERSION_3_2 || GLAD_GL_ARB_geometry_shader4 || GLAD_GL_OES_geometry_shader || GLAD_GL_ES_VERSION_3_2;
@ -754,7 +752,17 @@ void GPU_HW_OpenGL::SetBlendMode()
GL_FUNC_REVERSE_SUBTRACT :
GL_FUNC_ADD,
GL_FUNC_ADD);
glBlendFuncSeparate(GL_ONE, m_supports_dual_source_blend ? GL_SRC1_ALPHA : GL_SRC_ALPHA, GL_ONE, GL_ZERO);
if (m_supports_dual_source_blend)
{
glBlendFuncSeparate(GL_ONE, m_supports_dual_source_blend ? GL_SRC1_ALPHA : GL_SRC_ALPHA, GL_ONE, GL_ZERO);
}
else
{
const float factor =
(m_current_transparency_mode == GPUTransparencyMode::HalfBackgroundPlusHalfForeground) ? 0.5f : 1.0f;
glBlendFuncSeparate(GL_ONE, GL_CONSTANT_ALPHA, GL_ONE, GL_ZERO);
glBlendColor(0.0f, 0.0f, 0.0f, factor);
}
}
else
{