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OpenGL: Fix viewport/Scissor scaling on downscaling.

This commit is contained in:
FernandoS27 2021-10-23 15:57:05 +02:00 committed by Fernando Sahmkow
parent c97c46747d
commit 9189aacfe2
1 changed files with 28 additions and 6 deletions
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34
src/video_core/renderer_opengl/gl_rasterizer.cpp
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@ -187,6 +187,7 @@ void RasterizerOpenGL::Clear() {
std::scoped_lock lock{texture_cache.mutex};
texture_cache.UpdateRenderTargets(true);
state_tracker.BindFramebuffer(texture_cache.GetFramebuffer()->Handle());
SyncViewport();
if (regs.clear_flags.scissor) {
SyncScissorTest();
} else {
@ -571,6 +572,15 @@ void RasterizerOpenGL::SyncViewport() {
}
const bool is_rescaling{texture_cache.IsRescaling()};
const float scale = is_rescaling ? Settings::values.resolution_info.up_factor : 1.0f;
const auto conv = [scale](float value) -> GLfloat {
float new_value = value * scale;
if (scale < 1.0f) {
const bool sign = std::signbit(value);
new_value = std::round(std::abs(new_value));
new_value = sign ? -new_value : new_value;
}
return static_cast<GLfloat>(new_value);
};
if (dirty_viewport) {
flags[Dirty::Viewports] = false;
@ -586,10 +596,11 @@ void RasterizerOpenGL::SyncViewport() {
flags[Dirty::Viewport0 + index] = false;
const auto& src = regs.viewport_transform[index];
GLfloat x = (src.translate_x - src.scale_x) * scale;
GLfloat y = (src.translate_y - src.scale_y) * scale;
GLfloat width = src.scale_x * 2.0f * scale;
GLfloat height = src.scale_y * 2.0f * scale;
GLfloat x = conv(src.translate_x - src.scale_x);
GLfloat y = conv(src.translate_y - src.scale_y);
GLfloat width = conv(src.scale_x * 2.0f);
GLfloat height = conv(src.scale_y * 2.0f);
if (height < 0) {
y += height;
height = -height;
@ -925,8 +936,19 @@ void RasterizerOpenGL::SyncScissorTest() {
const auto& resolution = Settings::values.resolution_info;
const bool is_rescaling{texture_cache.IsRescaling()};
const auto scale_up = [resolution, is_rescaling](u32 value) {
return is_rescaling ? resolution.ScaleUp(value) : value;
const u32 up_scale = is_rescaling ? resolution.up_scale : 1U;
const u32 down_shift = is_rescaling ? resolution.down_shift : 0U;
const auto scale_up = [up_scale, down_shift](u32 value) -> u32 {
if (value == 0) {
return 0U;
}
const u32 upset = value * up_scale;
u32 acumm{};
if ((up_scale >> down_shift) == 0) {
acumm = upset % 2;
}
const u32 converted_value = upset >> down_shift;
return std::max<u32>(converted_value + acumm, 1U);
};
for (std::size_t index = 0; index < Maxwell::NumViewports; ++index) {
if (!force && !flags[Dirty::Scissor0 + index]) {