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GPU: Use scissor test for drawing area

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This commit is contained in:
Connor McLaughlin
2019-09-14 21:54:58 +10:00
parent 3d6b8e485e
commit e40393fec4
2 changed files with 21 additions and 10 deletions
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21
src/pse/gpu_hw_opengl.cpp
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@ -175,7 +175,19 @@ void GPU_HW_OpenGL::SetViewport()
glViewport(x, y, width, height);
}
void GPU_HW_OpenGL::SetScissor() {}
void GPU_HW_OpenGL::SetScissor()
{
int left, top, right, bottom;
CalcScissorRect(&left, &top, &right, &bottom);
const int width = right - left;
const int height = bottom - top;
const int x = left;
const int y = VRAM_HEIGHT - bottom;
Log_DebugPrintf("SetScissor: (%d-%d, %d-%d)", x, x + width, y, y + height);
glScissor(x, y, width, height);
}
inline u32 ConvertRGBA5551ToRGBA8888(u16 color)
{
@ -252,7 +264,6 @@ void GPU_HW_OpenGL::FillVRAM(u32 x, u32 y, u32 width, u32 height, u32 color)
const auto [r, g, b, a] = RGBA8ToFloat(color);
glClearColor(r, g, b, a);
glClear(GL_COLOR_BUFFER_BIT);
glDisable(GL_SCISSOR_TEST);
}
void GPU_HW_OpenGL::UpdateVRAM(u32 x, u32 y, u32 width, u32 height, const void* data)
@ -293,6 +304,7 @@ void GPU_HW_OpenGL::UpdateTexturePageTexture()
m_framebuffer_texture->Bind();
glDisable(GL_BLEND);
glDisable(GL_SCISSOR_TEST);
glViewport(0, 0, TEXTURE_PAGE_WIDTH, TEXTURE_PAGE_HEIGHT);
glBindVertexArray(m_attributeless_vao_id);
@ -321,8 +333,13 @@ void GPU_HW_OpenGL::FlushRender()
if (m_batch_vertices.empty())
return;
glDisable(GL_CULL_FACE);
glDisable(GL_DEPTH_TEST);
glEnable(GL_SCISSOR_TEST);
glDepthMask(GL_FALSE);
SetProgram(m_batch_command.texture_enable, m_batch_command.texture_blending_raw);
SetViewport();
SetScissor();
if (m_batch_command.texture_enable)
m_texture_page_texture->Bind();