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add guMakeProgram{,FromSource,FromFiles}()

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This commit is contained in:
Josh Holtrop 2011-05-09 17:48:19 -04:00
parent 6ad367812b
commit 921ea83b01
2 changed files with 67 additions and 0 deletions
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57
glslUtil/glslUtil.c
View File

@ -272,3 +272,60 @@ GLuint guMakeBuffer(GLenum target, GLenum usage, const void *ptr, size_t sz)
glBufferData(target, sz, ptr, usage);
return id;
}
GLuint guMakeProgramFromSource(const char *v_shader, const char *f_shader,
guAttribBinding *bindings)
{
GLuint v_shader_id = guMakeShader(GL_VERTEX_SHADER, v_shader);
GLuint f_shader_id = guMakeShader(GL_FRAGMENT_SHADER, f_shader);
if (v_shader_id <= 0 || f_shader_id <= 0)
return 0;
GLuint id = guMakeProgram(v_shader_id, f_shader_id, bindings);
glDeleteShader(v_shader_id);
glDeleteShader(f_shader_id);
return id;
}
GLuint guMakeProgramFromFiles(const char *v_shader, const char *f_shader,
guAttribBinding *bindings)
{
GLuint v_shader_id = guMakeShaderFromFile(GL_VERTEX_SHADER, v_shader);
GLuint f_shader_id = guMakeShaderFromFile(GL_FRAGMENT_SHADER, f_shader);
if (v_shader_id <= 0 || f_shader_id <= 0)
return 0;
GLuint id = guMakeProgram(v_shader_id, f_shader_id, bindings);
glDeleteShader(v_shader_id);
glDeleteShader(f_shader_id);
return id;
}
GLuint guMakeProgram(GLuint v_shader_id, GLuint f_shader_id,
guAttribBinding *bindings)
{
GLuint program = glCreateProgram();
glAttachShader(program, v_shader_id);
glAttachShader(program, f_shader_id);
if (bindings != NULL)
{
int i;
for (i = 0; bindings[i].index > 0 && bindings[i].name != NULL; i++)
{
glBindAttribLocation(program, bindings[i].index, bindings[i].name);
}
}
glLinkProgram(program);
GLint link_status;
glGetProgramiv(program, GL_LINK_STATUS, &link_status);
if (link_status != GL_TRUE)
{
char *log = guGetProgramLog(program);
fprintf(stderr, "Program log:\n%s\n", log);
free(log);
return 0;
}
return program;
}

10
glslUtil/glslUtil.h
View File

@ -9,6 +9,10 @@
#endif
typedef GLfloat guMatrix4x4[4][4];
typedef struct {
GLuint index;
const GLchar *name;
} guAttribBinding;
#ifdef __cplusplus
extern "C" {
@ -35,6 +39,12 @@ char *guGetProgramLog(GLuint id);
GLuint guMakeShaderFromFile(GLenum shaderType, const char *fname);
GLuint guMakeShader(GLenum shaderType, const char *source);
GLuint guMakeBuffer(GLenum target, GLenum usage, const void *ptr, size_t sz);
GLuint guMakeProgramFromSource(const char *v_shader, const char *f_shader,
guAttribBinding *bindings);
GLuint guMakeProgramFromFiles(const char *v_shader, const char *f_shader,
guAttribBinding *bindings);
GLuint guMakeProgram(GLuint v_shader_id, GLuint f_shader_id,
guAttribBinding *bindings);
#ifdef __cplusplus
}