Example/GLSL Separate Program Basics: Difference between revisions
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Example from separate shader compilation. |
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Creating two separable programs, one with a vertex shader and one with a fragment shader. | Creating two separable programs, one with a vertex shader and one with a fragment shader. | ||
<source lang="cpp"> | <source lang="cpp"> | ||
//Create two separable program objects from a | // Create two separable program objects from a | ||
//single source string respectively (vertSrc and fragSrc) | // single source string respectively (vertSrc and fragSrc) | ||
GLuint vertProg = glCreateShaderProgramv(GL_VERTEX_SHADER , 1, &vertSrc); | GLuint vertProg = glCreateShaderProgramv(GL_VERTEX_SHADER , 1, &vertSrc); | ||
GLuint fragProg = glCreateShaderProgramv(GL_FRAGMENT_SHADER, 1, &fragSrc); | GLuint fragProg = glCreateShaderProgramv(GL_FRAGMENT_SHADER, 1, &fragSrc); | ||
//CHECK FOR ERRORS HERE!. | // CHECK FOR ERRORS HERE!. | ||
//Generate a program pipeline and | // Generate a program pipeline and attach the programs to their respective stages | ||
glGenProgramPipelines(1, &pipeline); | glGenProgramPipelines(1, &pipeline); | ||
glUseProgramStages(pipeline, GL_VERTEX_SHADER_BIT , vertProg); | glUseProgramStages(pipeline, GL_VERTEX_SHADER_BIT , vertProg); | ||
glUseProgramStages(pipeline, GL_FRAGMENT_SHADER_BIT, fragProg); | glUseProgramStages(pipeline, GL_FRAGMENT_SHADER_BIT, fragProg); | ||
//Query and set any uniforms | // Query and set any uniforms | ||
GLint colorLoc = glGetUniformLocation(fragProg, "Color"); | GLint colorLoc = glGetUniformLocation(fragProg, "Color"); | ||
glProgramUniform4f(fragProg, colorLoc, 1.f, 0.f, 0.f, 1.f); | glProgramUniform4f(fragProg, colorLoc, 1.f, 0.f, 0.f, 1.f); | ||
</source> | </source> | ||
<noinclude>[[Category:Example Code]]</noinclude> | <noinclude>[[Category:Example Code]]</noinclude> | ||
Latest revision as of 11:12, 3 January 2018
Creating two separable programs, one with a vertex shader and one with a fragment shader.
// Create two separable program objects from a
// single source string respectively (vertSrc and fragSrc)
GLuint vertProg = glCreateShaderProgramv(GL_VERTEX_SHADER , 1, &vertSrc);
GLuint fragProg = glCreateShaderProgramv(GL_FRAGMENT_SHADER, 1, &fragSrc);
// CHECK FOR ERRORS HERE!.
// Generate a program pipeline and attach the programs to their respective stages
glGenProgramPipelines(1, &pipeline);
glUseProgramStages(pipeline, GL_VERTEX_SHADER_BIT , vertProg);
glUseProgramStages(pipeline, GL_FRAGMENT_SHADER_BIT, fragProg);
// Query and set any uniforms
GLint colorLoc = glGetUniformLocation(fragProg, "Color");
glProgramUniform4f(fragProg, colorLoc, 1.f, 0.f, 0.f, 1.f);