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GPU/OpenGL: Eliminate some redundant per-draw state calls

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This commit is contained in:
Connor McLaughlin 2020-10-31 12:12:23 +10:00
parent 2eaebd8921
commit b3c5c0f852
2 changed files with 41 additions and 15 deletions
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47
src/core/gpu_hw_opengl.cpp
View file

@ -94,8 +94,6 @@ void GPU_HW_OpenGL::ResetGraphicsAPIState()
glEnable(GL_CULL_FACE);
glDisable(GL_SCISSOR_TEST);
glDisable(GL_BLEND);
if (m_resolution_scale > 1 && !m_supports_geometry_shaders)
glLineWidth(1.0f);
glBindVertexArray(0);
m_uniform_stream_buffer->Unbind();
}
@ -109,12 +107,11 @@ void GPU_HW_OpenGL::RestoreGraphicsAPIState()
glEnable(GL_DEPTH_TEST);
glEnable(GL_SCISSOR_TEST);
glDepthMask(GL_TRUE);
glDepthFunc(GL_ALWAYS);
if (m_resolution_scale > 1 && !m_supports_geometry_shaders)
glLineWidth(static_cast<float>(m_resolution_scale));
glBindVertexArray(m_vao_id);
m_uniform_stream_buffer->Bind();
m_vram_read_texture.Bind();
SetBlendMode();
SetDepthFunc();
SetScissorFromDrawingArea();
m_batch_ubo_dirty = true;
}
@ -570,25 +567,42 @@ void GPU_HW_OpenGL::DrawBatchVertices(BatchRenderMode render_mode, u32 base_vert
[BoolToUInt8(m_batch.dithering)][BoolToUInt8(m_batch.interlacing)];
prog.Bind();
if (m_batch.texture_mode != TextureMode::Disabled)
m_vram_read_texture.Bind();
if (m_current_transparency_mode != m_batch.transparency_mode || m_current_render_mode != render_mode)
{
m_current_transparency_mode = m_batch.transparency_mode;
m_current_render_mode = render_mode;
SetBlendMode();
}
if (m_batch.transparency_mode == TransparencyMode::Disabled || render_mode == BatchRenderMode::OnlyOpaque)
if (m_current_check_mask_before_draw != m_batch.check_mask_before_draw)
{
m_current_check_mask_before_draw = m_batch.check_mask_before_draw;
SetDepthFunc();
}
glDrawArrays(GL_TRIANGLES, m_batch_base_vertex, num_vertices);
}
void GPU_HW_OpenGL::SetBlendMode()
{
if (m_current_transparency_mode == TransparencyMode::Disabled || m_current_render_mode == BatchRenderMode::OnlyOpaque)
{
glDisable(GL_BLEND);
}
else
{
glEnable(GL_BLEND);
glBlendEquationSeparate(
m_batch.transparency_mode == TransparencyMode::BackgroundMinusForeground ? GL_FUNC_REVERSE_SUBTRACT : GL_FUNC_ADD,
glBlendEquationSeparate(m_current_transparency_mode == TransparencyMode::BackgroundMinusForeground ?
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);
}
}
glDepthFunc(m_GPUSTAT.check_mask_before_draw ? GL_GEQUAL : GL_ALWAYS);
glDrawArrays(GL_TRIANGLES, m_batch_base_vertex, num_vertices);
void GPU_HW_OpenGL::SetDepthFunc()
{
glDepthFunc(m_current_check_mask_before_draw ? GL_GEQUAL : GL_ALWAYS);
}
void GPU_HW_OpenGL::SetScissorFromDrawingArea()
@ -714,6 +728,9 @@ void GPU_HW_OpenGL::UpdateDisplay()
glViewport(0, 0, m_vram_texture.GetWidth(), m_vram_texture.GetHeight());
glEnable(GL_DEPTH_TEST);
glEnable(GL_SCISSOR_TEST);
m_vram_read_texture.Bind();
SetBlendMode();
SetDepthFunc();
}
m_host_display->SetDisplayParameters(m_crtc_state.display_width, m_crtc_state.display_height,
@ -1020,6 +1037,8 @@ void GPU_HW_OpenGL::UpdateDepthBufferFromMaskBit()
glBindVertexArray(m_vao_id);
glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
glEnable(GL_SCISSOR_TEST);
m_vram_read_texture.Bind();
}
std::unique_ptr<GPU> GPU::CreateHardwareOpenGLRenderer()

7
src/core/gpu_hw_opengl.h
View file

@ -62,6 +62,9 @@ private:
bool CompilePrograms();
void SetDepthFunc();
void SetBlendMode();
// downsample texture - used for readbacks at >1xIR.
GL::Texture m_vram_texture;
GL::Texture m_vram_depth_texture;
@ -94,4 +97,8 @@ private:
bool m_supports_texture_buffer = false;
bool m_supports_geometry_shaders = false;
bool m_use_ssbo_for_vram_writes = false;
bool m_current_check_mask_before_draw = false;
TransparencyMode m_current_transparency_mode = TransparencyMode::Disabled;
BatchRenderMode m_current_render_mode = BatchRenderMode::TransparencyDisabled;
};