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https://github.com/dolphin-emu/dolphin.git
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f295182833
Approximately three or four times now, the issue of pointers being in an inconsistent state been an issue in the video backend renderers with regards to tripping up other developers. Global (ugh) resources are put into a unique_ptr and will always have a well-defined state of being - null or not null
92 lines
2.5 KiB
C++
92 lines
2.5 KiB
C++
// Copyright 2008 Dolphin Emulator Project
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// Licensed under GPLv2+
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// Refer to the license.txt file included.
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#include "Common/Common.h"
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#include "Common/MemoryUtil.h"
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#include "Common/x64ABI.h"
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#include "Common/x64Emitter.h"
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#include "Common/GL/GLUtil.h"
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#include "VideoBackends/OGL/ProgramShaderCache.h"
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#include "VideoBackends/OGL/VertexManager.h"
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#include "VideoCommon/CPMemory.h"
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#include "VideoCommon/NativeVertexFormat.h"
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#include "VideoCommon/VertexShaderGen.h"
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// Here's some global state. We only use this to keep track of what we've sent to the OpenGL state
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// machine.
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namespace OGL
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{
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NativeVertexFormat* VertexManager::CreateNativeVertexFormat(const PortableVertexDeclaration& vtx_decl)
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{
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return new GLVertexFormat(vtx_decl);
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}
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static inline GLuint VarToGL(VarType t)
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{
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static const GLuint lookup[5] = {
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GL_UNSIGNED_BYTE, GL_BYTE, GL_UNSIGNED_SHORT, GL_SHORT, GL_FLOAT
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};
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return lookup[t];
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}
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static void SetPointer(u32 attrib, u32 stride, const AttributeFormat &format)
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{
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if (!format.enable)
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return;
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glEnableVertexAttribArray(attrib);
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if (format.integer)
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glVertexAttribIPointer(attrib, format.components, VarToGL(format.type), stride, (u8*)nullptr + format.offset);
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else
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glVertexAttribPointer(attrib, format.components, VarToGL(format.type), true, stride, (u8*)nullptr + format.offset);
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}
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GLVertexFormat::GLVertexFormat(const PortableVertexDeclaration& _vtx_decl)
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{
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this->vtx_decl = _vtx_decl;
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u32 vertex_stride = _vtx_decl.stride;
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// We will not allow vertex components causing uneven strides.
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if (vertex_stride & 3)
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PanicAlert("Uneven vertex stride: %i", vertex_stride);
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VertexManager* const vm = static_cast<VertexManager*>(g_vertex_manager.get());
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glGenVertexArrays(1, &VAO);
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glBindVertexArray(VAO);
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// the element buffer is bound directly to the vao, so we must it set for every vao
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glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, vm->m_index_buffers);
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glBindBuffer(GL_ARRAY_BUFFER, vm->m_vertex_buffers);
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SetPointer(SHADER_POSITION_ATTRIB, vertex_stride, _vtx_decl.position);
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for (int i = 0; i < 3; i++)
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SetPointer(SHADER_NORM0_ATTRIB+i, vertex_stride, _vtx_decl.normals[i]);
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for (int i = 0; i < 2; i++)
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SetPointer(SHADER_COLOR0_ATTRIB+i, vertex_stride, _vtx_decl.colors[i]);
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for (int i = 0; i < 8; i++)
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SetPointer(SHADER_TEXTURE0_ATTRIB+i, vertex_stride, _vtx_decl.texcoords[i]);
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SetPointer(SHADER_POSMTX_ATTRIB, vertex_stride, _vtx_decl.posmtx);
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vm->m_last_vao = VAO;
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}
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GLVertexFormat::~GLVertexFormat()
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{
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glDeleteVertexArrays(1, &VAO);
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}
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void GLVertexFormat::SetupVertexPointers()
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{
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}
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}
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