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Simplify the math.

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Henrik Rydgård committed 2026-07-13 11:50:47 +02:00
1 parent a2fb013cf6
commit c320639016
1 file changed
+8 -8
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GPU/Common/GPUStateUtils.cpp
+8 -8
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@@ -522,14 +522,14 @@ void ConvertViewportAndScissor(const DisplayLayoutConfig &config, bool useBuffer
// Scissor. The scissor needs to be offset by the framebuffer offset.
const int scissorX1 = gstate.getScissorX1();
const int scissorY1 = gstate.getScissorY1();
const int scissorX2 = gstate.getScissorX2() + 1;
const int scissorY2 = gstate.getScissorY2() + 1;
const int scissorW = gstate.getScissorX2() + 1 - scissorX1;
const int scissorH = gstate.getScissorY2() + 1 - scissorY1;
if (useBufferedRendering) {
const float renderWidthFactor = (float)renderWidth / (float)bufferWidth;
const float renderHeightFactor = (float)renderHeight / (float)bufferHeight;
if (scissorX2 < scissorX1 || scissorY2 < scissorY1) {
if (scissorW < 0 || scissorH < 0) {
// Bad scissor, kill all drawing with a valid scissor setup.
out.scissorX = 0;
out.scissorY = 0;
@@ -538,8 +538,8 @@ void ConvertViewportAndScissor(const DisplayLayoutConfig &config, bool useBuffer
} else {
out.scissorX = (scissorX1 + gstate_c.curRTOffsetX) * renderWidthFactor;
out.scissorY = (scissorY1 + gstate_c.curRTOffsetY) * renderHeightFactor;
out.scissorW = (scissorX2 - scissorX1) * renderWidthFactor;
out.scissorH = (scissorY2 - scissorY1) * renderHeightFactor;
out.scissorW = scissorW * renderWidthFactor;
out.scissorH = scissorH * renderHeightFactor;
}
out.viewportX = 0.0f;
out.viewportY = 0.0f;
@@ -558,7 +558,7 @@ void ConvertViewportAndScissor(const DisplayLayoutConfig &config, bool useBuffer
renderHeight = rc.h;
const float renderWidthFactor = renderWidth / 480.0f;
const float renderHeightFactor = renderHeight / 272.0f;
if (scissorX2 < scissorX1 || scissorY2 < scissorY1) {
if (scissorW < 0 || scissorH < 0) {
// Bad scissor, kill all drawing with a valid scissor setup.
out.scissorX = 0;
out.scissorY = 0;
@@ -567,8 +567,8 @@ void ConvertViewportAndScissor(const DisplayLayoutConfig &config, bool useBuffer
} else {
out.scissorX = displayOffsetX + (scissorX1 + gstate_c.curRTOffsetX) * renderWidthFactor;
out.scissorY = displayOffsetY + (scissorY1 + gstate_c.curRTOffsetY) * renderHeightFactor;
out.scissorW = (scissorX2 - scissorX1) * renderWidthFactor;
out.scissorH = (scissorY2 - scissorY1) * renderHeightFactor;
out.scissorW = scissorW * renderWidthFactor;
out.scissorH = scissorH * renderHeightFactor;
}
out.viewportX = displayOffsetX;