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zydeco / a4d3636

Experiment in graphics programming, C++, OpenGL, simulation techniques.

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916 Nov 2023 11:11a4d3636Fractal ViewerJosh Stockin1271G

Blob @ zydeco / src / render / gl / GLRenderObject.cpp

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1#include <list>
2
3#include "ZydecoCommon.hpp"
4#include "GLRenderObject.hpp"
5#include "GLProgram.hpp"
6#include "GLTexture.hpp"
7
8
9static Logger LOGGER("GLRenderObject");
10
11// static initialize
12std::map<uint64_t, std::list<GLRenderObject*>> GLRenderObject::s_renderObjects = {};
13
14
15GLRenderObject::GLRenderObject(std::string gl_program_name, uint64_t render_order):
16 m_renderOrder(render_order),
17 m_renderEnabled(true)
18{
19 if (gl_program_name != "")
20 {
21 m_glProgram = GLProgram::GetGLProgram(gl_program_name);
22 if (m_glProgram == nullptr) { ZydecoFault("GLRenderObject(): Program '{}' is nonexistent", gl_program_name); }
23 }
24
25 s_renderObjects.insert(std::pair<uint64_t, std::list<GLRenderObject*>>(render_order, {}));
26 s_renderObjects.at(render_order).push_back(this);
27}
28
29GLRenderObject::~GLRenderObject()
30{
31 s_renderObjects.at(m_renderOrder).remove(this);
32 if (s_renderObjects.at(m_renderOrder).empty())
33 {
34 s_renderObjects.erase(m_renderOrder);
35 }
36}
37
38void GLRenderObject::RenderEnable()
39{
40 m_renderEnabled = true;
41}
42
43void GLRenderObject::RenderDisable()
44{
45 m_renderEnabled = false;
46}
47
48void GLRenderObject::AddTexture(uint64_t texture_unit, GLTexture *texture)
49{
50 m_textures[texture_unit] = texture;
51}
52
53void GLRenderObject::GLTargetSetup()
54{
55 glUseProgram(m_glProgram->GetGLProgramID());
56
57 for (std::pair<std::string, glUniform> uniform : m_uniforms)
58 {
59 int location = glGetUniformLocation(m_glProgram->GetGLProgramID(), uniform.first.c_str());
60 if (location == -1)
61 {
62 // LOGGER.Log(Logger::WARNING, "Render(): Uniform '{}' does not exist for program '{}'", uniform.first, m_glProgram->GetGLProgramName());
63 continue;
64 }
65
66 if (uniform.second.type == glUniformType::FLOAT)
67 {
68 switch (uniform.second.quantity)
69 {
70 case 1: glUniform1f(location, *(float*)(uniform.second.data[0])); break;
71 case 2: glUniform2f(location, *(float*)(uniform.second.data[0]), *(float*)(uniform.second.data[1])); break;
72 case 3: glUniform3f(location, *(float*)(uniform.second.data[0]), *(float*)(uniform.second.data[1]), *(float*)(uniform.second.data[2])); break;
73 case 4: glUniform4f(location, *(float*)(uniform.second.data[0]), *(float*)(uniform.second.data[1]), *(float*)(uniform.second.data[2]), *(float*)(uniform.second.data[3])); break;
74 }
75 }
76 else if (uniform.second.type == glUniformType::DOUBLE)
77 {
78 switch (uniform.second.quantity)
79 {
80 case 1: glUniform1d(location, *(double*)(uniform.second.data[0])); break;
81 case 2: glUniform2d(location, *(double*)(uniform.second.data[0]), *(double*)(uniform.second.data[1])); break;
82 case 3: glUniform3d(location, *(double*)(uniform.second.data[0]), *(double*)(uniform.second.data[1]), *(double*)(uniform.second.data[2])); break;
83 case 4: glUniform4d(location, *(double*)(uniform.second.data[0]), *(double*)(uniform.second.data[1]), *(double*)(uniform.second.data[2]), *(double*)(uniform.second.data[3])); break;
84 }
85 }
86 else if (uniform.second.type == glUniformType::INT)
87 {
88 switch (uniform.second.quantity)
89 {
90 case 1: glUniform1i(location, *(int*)(uniform.second.data[0])); break;
91 case 2: glUniform2i(location, *(int*)(uniform.second.data[0]), *(int*)(uniform.second.data[1])); break;
92 case 3: glUniform3i(location, *(int*)(uniform.second.data[0]), *(int*)(uniform.second.data[1]), *(int*)(uniform.second.data[2])); break;
93 case 4: glUniform4i(location, *(int*)(uniform.second.data[0]), *(int*)(uniform.second.data[1]), *(int*)(uniform.second.data[2]), *(int*)(uniform.second.data[3])); break;
94 }
95 }
96 else if (uniform.second.type == glUniformType::UINT)
97 {
98 switch (uniform.second.quantity)
99 {
100 case 1: glUniform1ui(location, *(unsigned int*)(uniform.second.data[0])); break;
101 case 2: glUniform2ui(location, *(unsigned int*)(uniform.second.data[0]), *(unsigned int*)(uniform.second.data[1])); break;
102 case 3: glUniform3ui(location, *(unsigned int*)(uniform.second.data[0]), *(unsigned int*)(uniform.second.data[1]), *(unsigned int*)(uniform.second.data[2])); break;
103 case 4: glUniform4ui(location, *(unsigned int*)(uniform.second.data[0]), *(unsigned int*)(uniform.second.data[1]), *(unsigned int*)(uniform.second.data[2]), *(unsigned int*)(uniform.second.data[3])); break;
104 }
105 }
106 else if (uniform.second.type == glUniformType::MAT4)
107 {
108 glUniformMatrix4fv(location, uniform.second.quantity, false, (float*)(uniform.second.data[0]) );
109// glUniformMatrix4fv(location, uniform.second.quantity, false, &((*(glm::mat4*)(uniform.second.data[0]))[0][0]));
110 }
111 }
112
113 for (std::pair<uint64_t, GLTexture*> texture : m_textures)
114 {
115 texture.second->Bind(texture.first);
116 }
117}
118
119std::map<uint64_t, std::list<GLRenderObject*>>& GLRenderObject::GetRenderObjects()
120{
121 return s_renderObjects;
122}
123