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Assert that multiple render targets are not set while alpha testing
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parent
59a004f915
commit
8e1239fbc5
@ -574,6 +574,7 @@ void RasterizerOpenGL::DrawArrays() {
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// Alpha Testing is synced on shaders.
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SyncTransformFeedback();
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SyncPointState();
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CheckAlphaTests();
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// TODO(bunnei): Sync framebuffer_scale uniform here
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// TODO(bunnei): Sync scissorbox uniform(s) here
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@ -1041,4 +1042,15 @@ void RasterizerOpenGL::SyncPointState() {
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state.point.size = regs.point_size == 0 ? 1 : regs.point_size;
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}
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void RasterizerOpenGL::CheckAlphaTests() {
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const auto& regs = Core::System::GetInstance().GPU().Maxwell3D().regs;
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if (regs.alpha_test_enabled != 0 && regs.rt_control.count > 1) {
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LOG_CRITICAL(
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Render_OpenGL,
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"Alpha Testing is enabled with Multiple Render Targets, this behavior is undefined.");
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UNREACHABLE();
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}
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}
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} // namespace OpenGL
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@ -171,6 +171,9 @@ private:
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/// Syncs the point state to match the guest state
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void SyncPointState();
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/// Check asserts for alpha testing.
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void CheckAlphaTests();
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bool has_ARB_direct_state_access = false;
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bool has_ARB_multi_bind = false;
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bool has_ARB_separate_shader_objects = false;
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@ -1276,9 +1276,8 @@ private:
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header.ps.IsColorComponentOutputEnabled(render_target, 1) ||
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header.ps.IsColorComponentOutputEnabled(render_target, 2) ||
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header.ps.IsColorComponentOutputEnabled(render_target, 3)) {
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shader.AddLine(fmt::format(
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"if (AlphaFunc({})) discard;",
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regs.GetRegisterAsFloat(current_reg)));
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shader.AddLine(fmt::format("if (!AlphaFunc({})) discard;",
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regs.GetRegisterAsFloat(current_reg)));
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current_reg += 4;
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}
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}
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