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video_core: Arithmetic overflow warning fix for gl_rasterizer (#1262)

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* video_core: Arithmetic overflow fix for gl_rasterizer

- Fixed warnings, which were indicating incorrect behavior from integral
promotion rules and types larger than those in which arithmetic is
typically performed.

- Added const for variables where possible and meaningful.

* Changed the casts from C to C++ style

Changed the C-style casts to C++ casts as proposed.
Took also care about signed / unsigned behaviour.
This commit is contained in:
Patrick Elsässer 2018-09-08 08:59:59 +02:00 committed by bunnei
parent 460ebc8187
commit a8974f0556
1 changed files with 14 additions and 12 deletions
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26
src/video_core/renderer_opengl/gl_rasterizer.cpp
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@ -152,13 +152,13 @@ void RasterizerOpenGL::SetupVertexArrays() {
const Tegra::GPUVAddr end = regs.vertex_array_limit[index].LimitAddress(); const Tegra::GPUVAddr end = regs.vertex_array_limit[index].LimitAddress();
if (regs.instanced_arrays.IsInstancingEnabled(index) && vertex_array.divisor != 0) { if (regs.instanced_arrays.IsInstancingEnabled(index) && vertex_array.divisor != 0) {
start += vertex_array.stride * (gpu.state.current_instance / vertex_array.divisor); start += static_cast<Tegra::GPUVAddr>(vertex_array.stride) *
(gpu.state.current_instance / vertex_array.divisor);
} }
ASSERT(end > start); ASSERT(end > start);
u64 size = end - start + 1; const u64 size = end - start + 1;
const GLintptr vertex_buffer_offset = buffer_cache.UploadMemory(start, size);
GLintptr vertex_buffer_offset = buffer_cache.UploadMemory(start, size);
// Bind the vertex array to the buffer at the current offset. // Bind the vertex array to the buffer at the current offset.
glBindVertexBuffer(index, buffer_cache.GetHandle(), vertex_buffer_offset, glBindVertexBuffer(index, buffer_cache.GetHandle(), vertex_buffer_offset,
@ -178,7 +178,7 @@ void RasterizerOpenGL::SetupVertexArrays() {
void RasterizerOpenGL::SetupShaders() { void RasterizerOpenGL::SetupShaders() {
MICROPROFILE_SCOPE(OpenGL_Shader); MICROPROFILE_SCOPE(OpenGL_Shader);
auto& gpu = Core::System::GetInstance().GPU().Maxwell3D(); const auto& gpu = Core::System::GetInstance().GPU().Maxwell3D();
// Next available bindpoints to use when uploading the const buffers and textures to the GLSL // Next available bindpoints to use when uploading the const buffers and textures to the GLSL
// shaders. The constbuffer bindpoint starts after the shader stage configuration bind points. // shaders. The constbuffer bindpoint starts after the shader stage configuration bind points.
@ -186,7 +186,7 @@ void RasterizerOpenGL::SetupShaders() {
u32 current_texture_bindpoint = 0; u32 current_texture_bindpoint = 0;
for (size_t index = 0; index < Maxwell::MaxShaderProgram; ++index) { for (size_t index = 0; index < Maxwell::MaxShaderProgram; ++index) {
auto& shader_config = gpu.regs.shader_config[index]; const auto& shader_config = gpu.regs.shader_config[index];
const Maxwell::ShaderProgram program{static_cast<Maxwell::ShaderProgram>(index)}; const Maxwell::ShaderProgram program{static_cast<Maxwell::ShaderProgram>(index)};
// Skip stages that are not enabled // Skip stages that are not enabled
@ -198,7 +198,7 @@ void RasterizerOpenGL::SetupShaders() {
GLShader::MaxwellUniformData ubo{}; GLShader::MaxwellUniformData ubo{};
ubo.SetFromRegs(gpu.state.shader_stages[stage]); ubo.SetFromRegs(gpu.state.shader_stages[stage]);
GLintptr offset = buffer_cache.UploadHostMemory( const GLintptr offset = buffer_cache.UploadHostMemory(
&ubo, sizeof(ubo), static_cast<size_t>(uniform_buffer_alignment)); &ubo, sizeof(ubo), static_cast<size_t>(uniform_buffer_alignment));
// Bind the buffer // Bind the buffer
@ -436,7 +436,7 @@ void RasterizerOpenGL::DrawArrays() {
ScopeAcquireGLContext acquire_context{emu_window}; ScopeAcquireGLContext acquire_context{emu_window};
auto [dirty_color_surface, dirty_depth_surface] = const auto [dirty_color_surface, dirty_depth_surface] =
ConfigureFramebuffers(true, regs.zeta.Address() != 0 && regs.zeta_enable != 0, true); ConfigureFramebuffers(true, regs.zeta.Address() != 0 && regs.zeta_enable != 0, true);
SyncDepthTestState(); SyncDepthTestState();
@ -450,7 +450,8 @@ void RasterizerOpenGL::DrawArrays() {
// Draw the vertex batch // Draw the vertex batch
const bool is_indexed = accelerate_draw == AccelDraw::Indexed; const bool is_indexed = accelerate_draw == AccelDraw::Indexed;
const u64 index_buffer_size{regs.index_array.count * regs.index_array.FormatSizeInBytes()}; const u64 index_buffer_size{static_cast<u64>(regs.index_array.count) *
static_cast<u64>(regs.index_array.FormatSizeInBytes())};
state.draw.vertex_buffer = buffer_cache.GetHandle(); state.draw.vertex_buffer = buffer_cache.GetHandle();
state.Apply(); state.Apply();
@ -493,7 +494,8 @@ void RasterizerOpenGL::DrawArrays() {
const GLint base_vertex{static_cast<GLint>(regs.vb_element_base)}; const GLint base_vertex{static_cast<GLint>(regs.vb_element_base)};
// Adjust the index buffer offset so it points to the first desired index. // Adjust the index buffer offset so it points to the first desired index.
index_buffer_offset += regs.index_array.first * regs.index_array.FormatSizeInBytes(); index_buffer_offset += static_cast<GLintptr>(regs.index_array.first) *
static_cast<GLintptr>(regs.index_array.FormatSizeInBytes());
glDrawElementsBaseVertex(primitive_mode, regs.index_array.count, glDrawElementsBaseVertex(primitive_mode, regs.index_array.count,
MaxwellToGL::IndexFormat(regs.index_array.format), MaxwellToGL::IndexFormat(regs.index_array.format),
@ -588,7 +590,7 @@ void RasterizerOpenGL::SamplerInfo::Create() {
} }
void RasterizerOpenGL::SamplerInfo::SyncWithConfig(const Tegra::Texture::TSCEntry& config) { void RasterizerOpenGL::SamplerInfo::SyncWithConfig(const Tegra::Texture::TSCEntry& config) {
GLuint s = sampler.handle; const GLuint s = sampler.handle;
if (mag_filter != config.mag_filter) { if (mag_filter != config.mag_filter) {
mag_filter = config.mag_filter; mag_filter = config.mag_filter;
@ -682,7 +684,7 @@ u32 RasterizerOpenGL::SetupTextures(Maxwell::ShaderStage stage, Shader& shader,
for (u32 bindpoint = 0; bindpoint < entries.size(); ++bindpoint) { for (u32 bindpoint = 0; bindpoint < entries.size(); ++bindpoint) {
const auto& entry = entries[bindpoint]; const auto& entry = entries[bindpoint];
u32 current_bindpoint = current_unit + bindpoint; const u32 current_bindpoint = current_unit + bindpoint;
// Bind the uniform to the sampler. // Bind the uniform to the sampler.