diff options
Diffstat (limited to 'progs/util/shaderutil.c')
| -rw-r--r-- | progs/util/shaderutil.c | 233 |
1 files changed, 190 insertions, 43 deletions
diff --git a/progs/util/shaderutil.c b/progs/util/shaderutil.c index 2f1c4e38b3..4db950016b 100644 --- a/progs/util/shaderutil.c +++ b/progs/util/shaderutil.c @@ -9,20 +9,16 @@ #include <assert.h> #include <stdio.h> #include <stdlib.h> +#include <string.h> +#include <GL/glew.h> #include <GL/glut.h> -#include "extfuncs.h" #include "shaderutil.h" +/** time to compile previous shader */ +static GLdouble CompileTime = 0.0; -static void -Init(void) -{ - static GLboolean firstCall = GL_TRUE; - if (firstCall) { - GetExtensionFuncs(); - firstCall = GL_FALSE; - } -} +/** time to linke previous program */ +static GLdouble LinkTime = 0.0; GLboolean @@ -47,17 +43,22 @@ CompileShaderText(GLenum shaderType, const char *text) { GLuint shader; GLint stat; + GLdouble t0, t1; + + shader = glCreateShader(shaderType); + glShaderSource(shader, 1, (const GLchar **) &text, NULL); + + t0 = glutGet(GLUT_ELAPSED_TIME) * 0.001; + glCompileShader(shader); + t1 = glutGet(GLUT_ELAPSED_TIME) * 0.001; - Init(); + CompileTime = t1 - t0; - shader = glCreateShader_func(shaderType); - glShaderSource_func(shader, 1, (const GLchar **) &text, NULL); - glCompileShader_func(shader); - glGetShaderiv_func(shader, GL_COMPILE_STATUS, &stat); + glGetShaderiv(shader, GL_COMPILE_STATUS, &stat); if (!stat) { GLchar log[1000]; GLsizei len; - glGetShaderInfoLog_func(shader, 1000, &len, log); + glGetShaderInfoLog(shader, 1000, &len, log); fprintf(stderr, "Error: problem compiling shader: %s\n", log); exit(1); } @@ -78,8 +79,9 @@ CompileShaderFile(GLenum shaderType, const char *filename) int n; char *buffer = (char*) malloc(max); GLuint shader; + FILE *f; - FILE *f = fopen(filename, "r"); + f = fopen(filename, "r"); if (!f) { fprintf(stderr, "Unable to open shader file %s\n", filename); return 0; @@ -105,24 +107,30 @@ CompileShaderFile(GLenum shaderType, const char *filename) GLuint LinkShaders(GLuint vertShader, GLuint fragShader) { - GLuint program = glCreateProgram_func(); + GLuint program = glCreateProgram(); + GLdouble t0, t1; assert(vertShader || fragShader); if (fragShader) - glAttachShader_func(program, fragShader); + glAttachShader(program, fragShader); if (vertShader) - glAttachShader_func(program, vertShader); - glLinkProgram_func(program); + glAttachShader(program, vertShader); + + t0 = glutGet(GLUT_ELAPSED_TIME) * 0.001; + glLinkProgram(program); + t1 = glutGet(GLUT_ELAPSED_TIME) * 0.001; + + LinkTime = t1 - t0; /* check link */ { GLint stat; - glGetProgramiv_func(program, GL_LINK_STATUS, &stat); + glGetProgramiv(program, GL_LINK_STATUS, &stat); if (!stat) { GLchar log[1000]; GLsizei len; - glGetProgramInfoLog_func(program, 1000, &len, log); + glGetProgramInfoLog(program, 1000, &len, log); fprintf(stderr, "Shader link error:\n%s\n", log); return 0; } @@ -132,37 +140,176 @@ LinkShaders(GLuint vertShader, GLuint fragShader) } +GLboolean +ValidateShaderProgram(GLuint program) +{ + GLint stat; + glValidateProgramARB(program); + glGetProgramiv(program, GL_VALIDATE_STATUS, &stat); + + if (!stat) { + GLchar log[1000]; + GLsizei len; + glGetProgramInfoLog(program, 1000, &len, log); + fprintf(stderr, "Program validation error:\n%s\n", log); + return 0; + } + + return (GLboolean) stat; +} + + +GLdouble +GetShaderCompileTime(void) +{ + return CompileTime; +} + + +GLdouble +GetShaderLinkTime(void) +{ + return LinkTime; +} + + void -InitUniforms(GLuint program, struct uniform_info uniforms[]) +SetUniformValues(GLuint program, struct uniform_info uniforms[]) { GLuint i; for (i = 0; uniforms[i].name; i++) { uniforms[i].location - = glGetUniformLocation_func(program, uniforms[i].name); - - printf("Uniform %s location: %d\n", uniforms[i].name, - uniforms[i].location); - - switch (uniforms[i].size) { - case 1: - if (uniforms[i].type == GL_INT) - glUniform1i_func(uniforms[i].location, - (GLint) uniforms[i].value[0]); - else - glUniform1fv_func(uniforms[i].location, 1, uniforms[i].value); + = glGetUniformLocation(program, uniforms[i].name); + + switch (uniforms[i].type) { + case GL_INT: + case GL_SAMPLER_1D: + case GL_SAMPLER_2D: + case GL_SAMPLER_3D: + case GL_SAMPLER_CUBE: + case GL_SAMPLER_2D_RECT_ARB: + assert(uniforms[i].value[0] >= 0.0F); + glUniform1i(uniforms[i].location, + (GLint) uniforms[i].value[0]); + break; + case GL_FLOAT: + glUniform1fv(uniforms[i].location, 1, uniforms[i].value); break; - case 2: - glUniform2fv_func(uniforms[i].location, 1, uniforms[i].value); + case GL_FLOAT_VEC2: + glUniform2fv(uniforms[i].location, 1, uniforms[i].value); break; - case 3: - glUniform3fv_func(uniforms[i].location, 1, uniforms[i].value); + case GL_FLOAT_VEC3: + glUniform3fv(uniforms[i].location, 1, uniforms[i].value); break; - case 4: - glUniform4fv_func(uniforms[i].location, 1, uniforms[i].value); + case GL_FLOAT_VEC4: + glUniform4fv(uniforms[i].location, 1, uniforms[i].value); break; default: - abort(); + if (strncmp(uniforms[i].name, "gl_", 3) == 0) { + /* built-in uniform: ignore */ + } + else { + fprintf(stderr, + "Unexpected uniform data type in SetUniformValues\n"); + abort(); + } } } } + + +/** Get list of uniforms used in the program */ +GLuint +GetUniforms(GLuint program, struct uniform_info uniforms[]) +{ + GLint n, max, i; + + glGetProgramiv(program, GL_ACTIVE_UNIFORMS, &n); + glGetProgramiv(program, GL_ACTIVE_UNIFORM_MAX_LENGTH, &max); + + for (i = 0; i < n; i++) { + GLint size, len; + GLenum type; + char name[100]; + + glGetActiveUniform(program, i, 100, &len, &size, &type, name); + + uniforms[i].name = strdup(name); + uniforms[i].size = size; + uniforms[i].type = type; + uniforms[i].location = glGetUniformLocation(program, name); + } + + uniforms[i].name = NULL; /* end of list */ + + return n; +} + + +void +PrintUniforms(const struct uniform_info uniforms[]) +{ + GLint i; + + printf("Uniforms:\n"); + + for (i = 0; uniforms[i].name; i++) { + printf(" %d: %s size=%d type=0x%x loc=%d value=%g, %g, %g, %g\n", + i, + uniforms[i].name, + uniforms[i].size, + uniforms[i].type, + uniforms[i].location, + uniforms[i].value[0], + uniforms[i].value[1], + uniforms[i].value[2], + uniforms[i].value[3]); + } +} + + +/** Get list of attribs used in the program */ +GLuint +GetAttribs(GLuint program, struct attrib_info attribs[]) +{ + GLint n, max, i; + + glGetProgramiv(program, GL_ACTIVE_ATTRIBUTES, &n); + glGetProgramiv(program, GL_ACTIVE_ATTRIBUTE_MAX_LENGTH, &max); + + for (i = 0; i < n; i++) { + GLint size, len; + GLenum type; + char name[100]; + + glGetActiveAttrib(program, i, 100, &len, &size, &type, name); + + attribs[i].name = strdup(name); + attribs[i].size = size; + attribs[i].type = type; + attribs[i].location = glGetAttribLocation(program, name); + } + + attribs[i].name = NULL; /* end of list */ + + return n; +} + + +void +PrintAttribs(const struct attrib_info attribs[]) +{ + GLint i; + + printf("Attribs:\n"); + + for (i = 0; attribs[i].name; i++) { + printf(" %d: %s size=%d type=0x%x loc=%d\n", + i, + attribs[i].name, + attribs[i].size, + attribs[i].type, + attribs[i].location); + } +} |