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gl_rasterizer: Use DSA for vertex array objects

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This commit is contained in:
ReinUsesLisp 2019-01-06 01:53:27 -03:00
parent ea4928393f
commit 35c095898b
6 changed files with 53 additions and 79 deletions
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62
src/video_core/renderer_opengl/gl_rasterizer.cpp
View file

@ -135,27 +135,25 @@ void RasterizerOpenGL::CheckExtensions() {
}
}
void RasterizerOpenGL::SetupVertexFormat() {
GLuint RasterizerOpenGL::SetupVertexFormat() {
auto& gpu = Core::System::GetInstance().GPU().Maxwell3D();
const auto& regs = gpu.regs;
if (!gpu.dirty_flags.vertex_attrib_format)
return;
if (!gpu.dirty_flags.vertex_attrib_format) {
return state.draw.vertex_array;
}
gpu.dirty_flags.vertex_attrib_format = false;
MICROPROFILE_SCOPE(OpenGL_VAO);
auto [iter, is_cache_miss] = vertex_array_cache.try_emplace(regs.vertex_attrib_format);
auto& VAO = iter->second;
auto& vao_entry = iter->second;
if (is_cache_miss) {
VAO.Create();
state.draw.vertex_array = VAO.handle;
state.ApplyVertexBufferState();
vao_entry.Create();
const GLuint vao = vao_entry.handle;
// The index buffer binding is stored within the VAO. Stupid OpenGL, but easy to work
// around.
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, buffer_cache.GetHandle());
glVertexArrayElementBuffer(vao, buffer_cache.GetHandle());
// Use the vertex array as-is, assumes that the data is formatted correctly for OpenGL.
// Enables the first 16 vertex attributes always, as we don't know which ones are actually
@ -163,7 +161,7 @@ void RasterizerOpenGL::SetupVertexFormat() {
// for now to avoid OpenGL errors.
// TODO(Subv): Analyze the shader to identify which attributes are actually used and don't
// assume every shader uses them all.
for (unsigned index = 0; index < 16; ++index) {
for (u32 index = 0; index < 16; ++index) {
const auto& attrib = regs.vertex_attrib_format[index];
// Ignore invalid attributes.
@ -178,28 +176,29 @@ void RasterizerOpenGL::SetupVertexFormat() {
ASSERT(buffer.IsEnabled());
glEnableVertexAttribArray(index);
glEnableVertexArrayAttrib(vao, index);
if (attrib.type == Tegra::Engines::Maxwell3D::Regs::VertexAttribute::Type::SignedInt ||
attrib.type ==
Tegra::Engines::Maxwell3D::Regs::VertexAttribute::Type::UnsignedInt) {
glVertexAttribIFormat(index, attrib.ComponentCount(),
MaxwellToGL::VertexType(attrib), attrib.offset);
glVertexArrayAttribIFormat(vao, index, attrib.ComponentCount(),
MaxwellToGL::VertexType(attrib), attrib.offset);
} else {
glVertexAttribFormat(index, attrib.ComponentCount(),
MaxwellToGL::VertexType(attrib),
attrib.IsNormalized() ? GL_TRUE : GL_FALSE, attrib.offset);
glVertexArrayAttribFormat(
vao, index, attrib.ComponentCount(), MaxwellToGL::VertexType(attrib),
attrib.IsNormalized() ? GL_TRUE : GL_FALSE, attrib.offset);
}
glVertexAttribBinding(index, attrib.buffer);
glVertexArrayAttribBinding(vao, index, attrib.buffer);
}
}
state.draw.vertex_array = VAO.handle;
state.ApplyVertexBufferState();
// Rebinding the VAO invalidates the vertex buffer bindings.
gpu.dirty_flags.vertex_array = 0xFFFFFFFF;
state.draw.vertex_array = vao_entry.handle;
return vao_entry.handle;
}
void RasterizerOpenGL::SetupVertexBuffer() {
void RasterizerOpenGL::SetupVertexBuffer(GLuint vao) {
auto& gpu = Core::System::GetInstance().GPU().Maxwell3D();
const auto& regs = gpu.regs;
@ -217,7 +216,7 @@ void RasterizerOpenGL::SetupVertexBuffer() {
if (!vertex_array.IsEnabled())
continue;
Tegra::GPUVAddr start = vertex_array.StartAddress();
const Tegra::GPUVAddr start = vertex_array.StartAddress();
const Tegra::GPUVAddr end = regs.vertex_array_limit[index].LimitAddress();
ASSERT(end > start);
@ -225,21 +224,18 @@ void RasterizerOpenGL::SetupVertexBuffer() {
const GLintptr vertex_buffer_offset = buffer_cache.UploadMemory(start, size);
// Bind the vertex array to the buffer at the current offset.
glBindVertexBuffer(index, buffer_cache.GetHandle(), vertex_buffer_offset,
vertex_array.stride);
glVertexArrayVertexBuffer(vao, index, buffer_cache.GetHandle(), vertex_buffer_offset,
vertex_array.stride);
if (regs.instanced_arrays.IsInstancingEnabled(index) && vertex_array.divisor != 0) {
// Enable vertex buffer instancing with the specified divisor.
glVertexBindingDivisor(index, vertex_array.divisor);
glVertexArrayBindingDivisor(vao, index, vertex_array.divisor);
} else {
// Disable the vertex buffer instancing.
glVertexBindingDivisor(index, 0);
glVertexArrayBindingDivisor(vao, index, 0);
}
}
// Implicit set by glBindVertexBuffer. Stupid glstate handling...
state.draw.vertex_buffer = buffer_cache.GetHandle();
gpu.dirty_flags.vertex_array = 0;
}
@ -689,9 +685,6 @@ void RasterizerOpenGL::DrawArrays() {
// Draw the vertex batch
const bool is_indexed = accelerate_draw == AccelDraw::Indexed;
state.draw.vertex_buffer = buffer_cache.GetHandle();
state.ApplyVertexBufferState();
std::size_t buffer_size = CalculateVertexArraysSize();
// Add space for index buffer (keeping in mind non-core primitives)
@ -721,8 +714,9 @@ void RasterizerOpenGL::DrawArrays() {
gpu.dirty_flags.vertex_array = 0xFFFFFFFF;
}
SetupVertexFormat();
SetupVertexBuffer();
const GLuint vao = SetupVertexFormat();
SetupVertexBuffer(vao);
DrawParameters params = SetupDraw();
SetupShaders(params.primitive_mode);

6
src/video_core/renderer_opengl/gl_rasterizer.h
View file

@ -209,8 +209,10 @@ private:
std::size_t CalculateIndexBufferSize() const;
void SetupVertexFormat();
void SetupVertexBuffer();
/// Updates and returns a vertex array object representing current vertex format
GLuint SetupVertexFormat();
void SetupVertexBuffer(GLuint vao);
DrawParameters SetupDraw();

5
src/video_core/renderer_opengl/gl_resource_manager.cpp
View file

@ -117,7 +117,7 @@ void OGLBuffer::Create() {
return;
MICROPROFILE_SCOPE(OpenGL_ResourceCreation);
glGenBuffers(1, &handle);
glCreateBuffers(1, &handle);
}
void OGLBuffer::Release() {
@ -126,7 +126,6 @@ void OGLBuffer::Release() {
MICROPROFILE_SCOPE(OpenGL_ResourceDeletion);
glDeleteBuffers(1, &handle);
OpenGLState::GetCurState().ResetBuffer(handle).Apply();
handle = 0;
}
@ -152,7 +151,7 @@ void OGLVertexArray::Create() {
return;
MICROPROFILE_SCOPE(OpenGL_ResourceCreation);
glGenVertexArrays(1, &handle);
glCreateVertexArrays(1, &handle);
}
void OGLVertexArray::Release() {

26
src/video_core/renderer_opengl/gl_state.cpp
View file

@ -83,7 +83,6 @@ OpenGLState::OpenGLState() {
draw.read_framebuffer = 0;
draw.draw_framebuffer = 0;
draw.vertex_array = 0;
draw.vertex_buffer = 0;
draw.shader_program = 0;
draw.program_pipeline = 0;
@ -513,18 +512,6 @@ void OpenGLState::ApplyFramebufferState() const {
}
}
void OpenGLState::ApplyVertexBufferState() const {
// Vertex array
if (draw.vertex_array != cur_state.draw.vertex_array) {
glBindVertexArray(draw.vertex_array);
}
// Vertex buffer
if (draw.vertex_buffer != cur_state.draw.vertex_buffer) {
glBindBuffer(GL_ARRAY_BUFFER, draw.vertex_buffer);
}
}
void OpenGLState::ApplyDepthClamp() const {
if (depth_clamp.far_plane == cur_state.depth_clamp.far_plane &&
depth_clamp.near_plane == cur_state.depth_clamp.near_plane) {
@ -542,7 +529,11 @@ void OpenGLState::ApplyDepthClamp() const {
void OpenGLState::Apply() const {
ApplyFramebufferState();
ApplyVertexBufferState();
// Vertex array
if (draw.vertex_array != cur_state.draw.vertex_array) {
glBindVertexArray(draw.vertex_array);
}
// Shader program
if (draw.shader_program != cur_state.draw.shader_program) {
@ -633,13 +624,6 @@ OpenGLState& OpenGLState::ResetPipeline(GLuint handle) {
return *this;
}
OpenGLState& OpenGLState::ResetBuffer(GLuint handle) {
if (draw.vertex_buffer == handle) {
draw.vertex_buffer = 0;
}
return *this;
}
OpenGLState& OpenGLState::ResetVertexArray(GLuint handle) {
if (draw.vertex_array == handle) {
draw.vertex_array = 0;

4
src/video_core/renderer_opengl/gl_state.h
View file

@ -154,7 +154,6 @@ public:
GLuint read_framebuffer; // GL_READ_FRAMEBUFFER_BINDING
GLuint draw_framebuffer; // GL_DRAW_FRAMEBUFFER_BINDING
GLuint vertex_array; // GL_VERTEX_ARRAY_BINDING
GLuint vertex_buffer; // GL_ARRAY_BUFFER_BINDING
GLuint shader_program; // GL_CURRENT_PROGRAM
GLuint program_pipeline; // GL_PROGRAM_PIPELINE_BINDING
} draw;
@ -207,8 +206,6 @@ public:
void Apply() const;
/// Apply only the state afecting the framebuffer
void ApplyFramebufferState() const;
/// Apply only the state afecting the vertex buffer
void ApplyVertexBufferState() const;
/// Set the initial OpenGL state
static void ApplyDefaultState();
/// Resets any references to the given resource
@ -216,7 +213,6 @@ public:
OpenGLState& ResetSampler(GLuint handle);
OpenGLState& ResetProgram(GLuint handle);
OpenGLState& ResetPipeline(GLuint handle);
OpenGLState& ResetBuffer(GLuint handle);
OpenGLState& ResetVertexArray(GLuint handle);
OpenGLState& ResetFramebuffer(GLuint handle);
void EmulateViewportWithScissor();

29
src/video_core/renderer_opengl/renderer_opengl.cpp
View file

@ -245,19 +245,20 @@ void RendererOpenGL::InitOpenGLObjects() {
// Generate VAO
vertex_array.Create();
state.draw.vertex_array = vertex_array.handle;
state.draw.vertex_buffer = vertex_buffer.handle;
state.Apply();
// Attach vertex data to VAO
glBufferData(GL_ARRAY_BUFFER, sizeof(ScreenRectVertex) * 4, nullptr, GL_STREAM_DRAW);
glVertexAttribPointer(attrib_position, 2, GL_FLOAT, GL_FALSE, sizeof(ScreenRectVertex),
(GLvoid*)offsetof(ScreenRectVertex, position));
glVertexAttribPointer(attrib_tex_coord, 2, GL_FLOAT, GL_FALSE, sizeof(ScreenRectVertex),
(GLvoid*)offsetof(ScreenRectVertex, tex_coord));
glEnableVertexAttribArray(attrib_position);
glEnableVertexAttribArray(attrib_tex_coord);
glNamedBufferData(vertex_buffer.handle, sizeof(ScreenRectVertex) * 4, nullptr, GL_STREAM_DRAW);
glVertexArrayAttribFormat(vertex_array.handle, attrib_position, 2, GL_FLOAT, GL_FALSE,
offsetof(ScreenRectVertex, position));
glVertexArrayAttribFormat(vertex_array.handle, attrib_tex_coord, 2, GL_FLOAT, GL_FALSE,
offsetof(ScreenRectVertex, tex_coord));
glVertexArrayAttribBinding(vertex_array.handle, attrib_position, 0);
glVertexArrayAttribBinding(vertex_array.handle, attrib_tex_coord, 0);
glEnableVertexArrayAttrib(vertex_array.handle, attrib_position);
glEnableVertexArrayAttrib(vertex_array.handle, attrib_tex_coord);
glVertexArrayVertexBuffer(vertex_array.handle, 0, vertex_buffer.handle, 0,
sizeof(ScreenRectVertex));
// Allocate textures for the screen
screen_info.texture.resource.Create();
@ -369,14 +370,12 @@ void RendererOpenGL::DrawScreenTriangles(const ScreenInfo& screen_info, float x,
state.texture_units[0].texture = screen_info.display_texture;
state.texture_units[0].swizzle = {GL_RED, GL_GREEN, GL_BLUE, GL_ALPHA};
// Workaround brigthness problems in SMO by enabling sRGB in the final output
// if it has been used in the frame
// Needed because of this bug in QT
// QTBUG-50987
// if it has been used in the frame. Needed because of this bug in QT: QTBUG-50987
state.framebuffer_srgb.enabled = OpenGLState::GetsRGBUsed();
state.Apply();
glBufferSubData(GL_ARRAY_BUFFER, 0, sizeof(vertices), vertices.data());
glNamedBufferSubData(vertex_buffer.handle, 0, sizeof(vertices), vertices.data());
glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
// restore default state
// Restore default state
state.framebuffer_srgb.enabled = false;
state.texture_units[0].texture = 0;
state.Apply();