egutierrez
79b5f0b194
El buffer de aristas pasa a estatico (16B/arista: source, target, color, flags) y solo se reupload cuando cambia el grafo. Las posiciones de los nodos viven en un Texture Buffer Object (RG32F) actualizado por frame; el vertex shader hace texelFetch con gl_VertexID & 1 para elegir endpoint. Draw call: glDrawArraysInstanced(GL_LINES, 0, 2, edge_count) con divisor=1. Para 100k aristas: el upload de 4.8 MB/frame baja a 0 en regimen estable. edge_alpha pasa a uniform; la pre-multiplicacion en CPU desaparece. GLSL sigue en 330 core (samplerBuffer/texelFetch estan en 1.40+). gl_loader gana glBufferSubData, glVertexAttribIPointer y glTexBuffer (en Linux ya estaban via GL_GLEXT_PROTOTYPES; ahora estan disponibles tambien en MinGW/Windows). Tests: nuevo test_graph_edge_static valida el layout de 16B y el packing RGBA8 del fallback. test_visual sigue verde — render visualmente identico. Bump graph_renderer 1.2.0 -> 1.3.0.
121 lines
4.7 KiB
C++
121 lines
4.7 KiB
C++
#include "gl_loader.h"
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#ifdef _WIN32
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PFNGLATTACHSHADERPROC fn_glAttachShader = nullptr;
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PFNGLBINDBUFFERPROC fn_glBindBuffer = nullptr;
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PFNGLBINDFRAMEBUFFERPROC fn_glBindFramebuffer = nullptr;
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PFNGLBINDVERTEXARRAYPROC fn_glBindVertexArray = nullptr;
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PFNGLCOMPILESHADERPROC fn_glCompileShader = nullptr;
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PFNGLCREATEPROGRAMPROC fn_glCreateProgram = nullptr;
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PFNGLCREATESHADERPROC fn_glCreateShader = nullptr;
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PFNGLDELETEBUFFERSPROC fn_glDeleteBuffers = nullptr;
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PFNGLDELETEFRAMEBUFFERSPROC fn_glDeleteFramebuffers = nullptr;
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PFNGLDELETEPROGRAMPROC fn_glDeleteProgram = nullptr;
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PFNGLDELETESHADERPROC fn_glDeleteShader = nullptr;
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PFNGLDELETEVERTEXARRAYSPROC fn_glDeleteVertexArrays = nullptr;
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PFNGLFRAMEBUFFERTEXTURE2DPROC fn_glFramebufferTexture2D = nullptr;
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PFNGLGENBUFFERSPROC fn_glGenBuffers = nullptr;
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PFNGLGENFRAMEBUFFERSPROC fn_glGenFramebuffers = nullptr;
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PFNGLGENVERTEXARRAYSPROC fn_glGenVertexArrays = nullptr;
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PFNGLGETPROGRAMINFOLOGPROC fn_glGetProgramInfoLog = nullptr;
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PFNGLGETPROGRAMIVPROC fn_glGetProgramiv = nullptr;
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PFNGLGETSHADERINFOLOGPROC fn_glGetShaderInfoLog = nullptr;
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PFNGLGETSHADERIVPROC fn_glGetShaderiv = nullptr;
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PFNGLGETUNIFORMLOCATIONPROC fn_glGetUniformLocation = nullptr;
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PFNGLLINKPROGRAMPROC fn_glLinkProgram = nullptr;
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PFNGLSHADERSOURCEPROC fn_glShaderSource = nullptr;
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PFNGLUNIFORM1FPROC fn_glUniform1f = nullptr;
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PFNGLUNIFORM1IPROC fn_glUniform1i = nullptr;
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PFNGLUNIFORM2FPROC fn_glUniform2f = nullptr;
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PFNGLUNIFORM3FPROC fn_glUniform3f = nullptr;
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PFNGLUNIFORM4FPROC fn_glUniform4f = nullptr;
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PFNGLUNIFORM4FVPROC fn_glUniform4fv = nullptr;
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PFNGLUNIFORMMATRIX4FVPROC fn_glUniformMatrix4fv = nullptr;
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PFNGLUSEPROGRAMPROC fn_glUseProgram = nullptr;
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PFNGLACTIVETEXTUREPROC fn_glActiveTexture = nullptr;
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PFNGLGENERATEMIPMAPPROC fn_glGenerateMipmap = nullptr;
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PFNGLBUFFERDATAPROC fn_glBufferData = nullptr;
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PFNGLDRAWARRAYSINSTANCEDPROC fn_glDrawArraysInstanced = nullptr;
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PFNGLENABLEVERTEXATTRIBARRAYPROC fn_glEnableVertexAttribArray = nullptr;
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PFNGLVERTEXATTRIBDIVISORPROC fn_glVertexAttribDivisor = nullptr;
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PFNGLVERTEXATTRIBPOINTERPROC fn_glVertexAttribPointer = nullptr;
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PFNGLBINDRENDERBUFFERPROC fn_glBindRenderbuffer = nullptr;
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PFNGLDELETERENDERBUFFERSPROC fn_glDeleteRenderbuffers = nullptr;
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PFNGLFRAMEBUFFERRENDERBUFFERPROC fn_glFramebufferRenderbuffer = nullptr;
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PFNGLGENRENDERBUFFERSPROC fn_glGenRenderbuffers = nullptr;
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PFNGLRENDERBUFFERSTORAGEPROC fn_glRenderbufferStorage = nullptr;
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PFNGLFRAMEBUFFERTEXTUREPROC fn_glFramebufferTexture = nullptr;
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PFNGLBUFFERSUBDATAPROC fn_glBufferSubData = nullptr;
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PFNGLVERTEXATTRIBIPOINTERPROC fn_glVertexAttribIPointer = nullptr;
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PFNGLTEXBUFFERPROC fn_glTexBuffer = nullptr;
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namespace fn::gfx {
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bool gl_loader_init() {
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#define LOAD(name) \
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fn_##name = (decltype(fn_##name))wglGetProcAddress(#name); \
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if (!fn_##name) return false
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LOAD(glAttachShader);
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LOAD(glBindBuffer);
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LOAD(glBindFramebuffer);
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LOAD(glBindVertexArray);
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LOAD(glCompileShader);
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LOAD(glCreateProgram);
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LOAD(glCreateShader);
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LOAD(glDeleteBuffers);
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LOAD(glDeleteFramebuffers);
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LOAD(glDeleteProgram);
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LOAD(glDeleteShader);
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LOAD(glDeleteVertexArrays);
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LOAD(glFramebufferTexture2D);
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LOAD(glGenBuffers);
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LOAD(glGenFramebuffers);
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LOAD(glGenVertexArrays);
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LOAD(glGetProgramInfoLog);
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LOAD(glGetProgramiv);
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LOAD(glGetShaderInfoLog);
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LOAD(glGetShaderiv);
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LOAD(glGetUniformLocation);
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LOAD(glLinkProgram);
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LOAD(glShaderSource);
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LOAD(glUniform1f);
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LOAD(glUniform1i);
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LOAD(glUniform2f);
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LOAD(glUniform3f);
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LOAD(glUniform4f);
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LOAD(glUniform4fv);
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LOAD(glUniformMatrix4fv);
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LOAD(glUseProgram);
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LOAD(glActiveTexture);
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LOAD(glGenerateMipmap);
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LOAD(glBufferData);
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LOAD(glDrawArraysInstanced);
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LOAD(glEnableVertexAttribArray);
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LOAD(glVertexAttribDivisor);
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LOAD(glVertexAttribPointer);
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LOAD(glBindRenderbuffer);
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LOAD(glDeleteRenderbuffers);
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LOAD(glFramebufferRenderbuffer);
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LOAD(glGenRenderbuffers);
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LOAD(glRenderbufferStorage);
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LOAD(glFramebufferTexture);
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LOAD(glBufferSubData);
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LOAD(glVertexAttribIPointer);
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LOAD(glTexBuffer);
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#undef LOAD
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return true;
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}
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} // namespace fn::gfx
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#else
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namespace fn::gfx {
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bool gl_loader_init() { return true; }
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} // namespace fn::gfx
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#endif
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