diff options
Diffstat (limited to 'src/video_core/renderer_opengl/gl_shader_decompiler.cpp')
| -rw-r--r-- | src/video_core/renderer_opengl/gl_shader_decompiler.cpp | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/src/video_core/renderer_opengl/gl_shader_decompiler.cpp b/src/video_core/renderer_opengl/gl_shader_decompiler.cpp index 09b003c59..bce7465b5 100644 --- a/src/video_core/renderer_opengl/gl_shader_decompiler.cpp +++ b/src/video_core/renderer_opengl/gl_shader_decompiler.cpp @@ -494,10 +494,10 @@ public: // instruction for now. if (stage == Maxwell3D::Regs::ShaderStage::Geometry) { // TODO(Rodrigo): nouveau sets some attributes after setting emitting a geometry - // shader. These instructions use a dirty register as buffer index. To avoid some - // drivers from complaining for the out of boundary writes, guard them. - const std::string buf_index{"min(" + GetRegisterAsInteger(buf_reg) + ", " + - std::to_string(MAX_GEOMETRY_BUFFERS - 1) + ')'}; + // shader. These instructions use a dirty register as buffer index, to avoid some + // drivers from complaining about out of boundary writes, guard them. + const std::string buf_index{"((" + GetRegisterAsInteger(buf_reg) + ") % " + + std::to_string(MAX_GEOMETRY_BUFFERS) + ')'}; shader.AddLine("amem[" + buf_index + "][" + std::to_string(static_cast<u32>(attribute)) + ']' + GetSwizzle(elem) + " = " + src + ';'); @@ -811,7 +811,11 @@ private: std::optional<Register> vertex = {}) { auto GeometryPass = [&](const std::string& name) { if (stage == Maxwell3D::Regs::ShaderStage::Geometry && vertex) { - return "gs_" + name + '[' + GetRegisterAsInteger(*vertex, 0, false) + ']'; + // TODO(Rodrigo): Guard geometry inputs against out of bound reads. Some games set + // an 0x80000000 index for those and the shader fails to build. Find out why this + // happens and what's its intent. + return "gs_" + name + '[' + GetRegisterAsInteger(*vertex, 0, false) + + " % MAX_VERTEX_INPUT]"; } return name; }; |