#include <stdio.h>
#include <stdlib.h>
#include <math.h>
+#include <GL/glew.h>
#include <GL/glut.h>
-#include <GL/glu.h>
-#include <GL/glext.h>
-#include "extfuncs.h"
+#include "shaderutil.h"
-static char *FragProgFile = "CH11-bumpmap.frag.txt";
-static char *VertProgFile = "CH11-bumpmap.vert.txt";
+static char *FragProgFile = "CH11-bumpmap.frag";
+static char *VertProgFile = "CH11-bumpmap.vert";
/* program/shader objects */
static GLuint fragShader;
static GLuint program;
-struct uniform_info {
- const char *name;
- GLuint size;
- GLint location;
- GLfloat value[4];
-};
-
static struct uniform_info Uniforms[] = {
- { "LightPosition", 3, -1, { 0.57737, 0.57735, 0.57735, 0.0 } },
- { "SurfaceColor", 3, -1, { 0.8, 0.8, 0.2, 0 } },
- { "BumpDensity", 1, -1, { 10.0, 0, 0, 0 } },
- { "BumpSize", 1, -1, { 0.125, 0, 0, 0 } },
- { "SpecularFactor", 1, -1, { 0.5, 0, 0, 0 } },
- { NULL, 0, 0, { 0, 0, 0, 0 } }
+ { "LightPosition", 1, GL_FLOAT_VEC3, { 0.57737, 0.57735, 0.57735, 0.0 }, -1 },
+ { "SurfaceColor", 1, GL_FLOAT_VEC3, { 0.8, 0.8, 0.2, 0 }, -1 },
+ { "BumpDensity", 1, GL_FLOAT, { 10.0, 0, 0, 0 }, -1 },
+ { "BumpSize", 1, GL_FLOAT, { 0.125, 0, 0, 0 }, -1 },
+ { "SpecularFactor", 1, GL_FLOAT, { 0.5, 0, 0, 0 }, -1 },
+ END_OF_UNIFORMS
};
static GLint win = 0;
Square(GLfloat size)
{
glNormal3f(0, 0, 1);
- glVertexAttrib3f_func(tangentAttrib, 1, 0, 0);
+ glVertexAttrib3f(tangentAttrib, 1, 0, 0);
glBegin(GL_POLYGON);
glTexCoord2f(0, 0); glVertex2f(-size, -size);
glTexCoord2f(1, 0); glVertex2f( size, -size);
glPopMatrix();
- glFinish();
- glFlush();
-
CheckError(__LINE__);
glutSwapBuffers();
static void
Reshape(int width, int height)
{
+ float ar = (float) width / (float) height;
glViewport(0, 0, width, height);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
- glFrustum(-1.0, 1.0, -1.0, 1.0, 5.0, 25.0);
+ glFrustum(-ar, ar, -1.0, 1.0, 5.0, 25.0);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
glTranslatef(0.0f, 0.0f, -15.0f);
static void
CleanUp(void)
{
- glDeleteShader_func(fragShader);
- glDeleteShader_func(vertShader);
- glDeleteProgram_func(program);
+ glDeleteShader(fragShader);
+ glDeleteShader(vertShader);
+ glDeleteProgram(program);
glutDestroyWindow(win);
}
}
-
-static void
-LoadAndCompileShader(GLuint shader, const char *text)
-{
- GLint stat;
-
- glShaderSource_func(shader, 1, (const GLchar **) &text, NULL);
-
- glCompileShader_func(shader);
-
- glGetShaderiv_func(shader, GL_COMPILE_STATUS, &stat);
- if (!stat) {
- GLchar log[1000];
- GLsizei len;
- glGetShaderInfoLog_func(shader, 1000, &len, log);
- fprintf(stderr, "bump: problem compiling shader: %s\n", log);
- exit(1);
- }
- else {
- printf("Shader compiled OK\n");
- }
-}
-
-
-/**
- * Read a shader from a file.
- */
-static void
-ReadShader(GLuint shader, const char *filename)
-{
- const int max = 100*1000;
- int n;
- char *buffer = (char*) malloc(max);
- FILE *f = fopen(filename, "r");
- if (!f) {
- fprintf(stderr, "bump: Unable to open shader file %s\n", filename);
- exit(1);
- }
-
- n = fread(buffer, 1, max, f);
- printf("bump: read %d bytes from shader file %s\n", n, filename);
- if (n > 0) {
- buffer[n] = 0;
- LoadAndCompileShader(shader, buffer);
- }
-
- fclose(f);
- free(buffer);
-}
-
-
-static void
-CheckLink(GLuint prog)
-{
- GLint stat;
- glGetProgramiv_func(prog, GL_LINK_STATUS, &stat);
- if (!stat) {
- GLchar log[1000];
- GLsizei len;
- glGetProgramInfoLog_func(prog, 1000, &len, log);
- fprintf(stderr, "Linker error:\n%s\n", log);
- }
- else {
- fprintf(stderr, "Link success!\n");
- }
-}
-
-
static void
Init(void)
{
- const char *version;
- GLint i;
-
- version = (const char *) glGetString(GL_VERSION);
- if (version[0] != '2' || version[1] != '.') {
- printf("Warning: this program expects OpenGL 2.0\n");
- /*exit(1);*/
- }
- printf("GL_RENDERER = %s\n",(const char *) glGetString(GL_RENDERER));
-
- GetExtensionFuncs();
-
- vertShader = glCreateShader_func(GL_VERTEX_SHADER);
- ReadShader(vertShader, VertProgFile);
+ if (!ShadersSupported())
+ exit(1);
- fragShader = glCreateShader_func(GL_FRAGMENT_SHADER);
- ReadShader(fragShader, FragProgFile);
+ vertShader = CompileShaderFile(GL_VERTEX_SHADER, VertProgFile);
+ fragShader = CompileShaderFile(GL_FRAGMENT_SHADER, FragProgFile);
+ program = LinkShaders(vertShader, fragShader);
- program = glCreateProgram_func();
- glAttachShader_func(program, fragShader);
- glAttachShader_func(program, vertShader);
- glLinkProgram_func(program);
- CheckLink(program);
- glUseProgram_func(program);
+ glUseProgram(program);
- assert(glIsProgram_func(program));
- assert(glIsShader_func(fragShader));
- assert(glIsShader_func(vertShader));
+ assert(glIsProgram(program));
+ assert(glIsShader(fragShader));
+ assert(glIsShader(vertShader));
assert(glGetError() == 0);
CheckError(__LINE__);
- 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:
- glUniform1fv_func(Uniforms[i].location, 1, Uniforms[i].value);
- break;
- case 2:
- glUniform2fv_func(Uniforms[i].location, 1, Uniforms[i].value);
- break;
- case 3:
- glUniform3fv_func(Uniforms[i].location, 1, Uniforms[i].value);
- break;
- case 4:
- glUniform4fv_func(Uniforms[i].location, 1, Uniforms[i].value);
- break;
- default:
- abort();
- }
- }
+ SetUniformValues(program, Uniforms);
+ PrintUniforms(Uniforms);
CheckError(__LINE__);
- tangentAttrib = glGetAttribLocation_func(program, "Tangent");
+ tangentAttrib = glGetAttribLocation(program, "Tangent");
printf("Tangent Attrib: %d\n", tangentAttrib);
assert(tangentAttrib >= 0);
glutInitWindowSize(400, 400);
glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH);
win = glutCreateWindow(argv[0]);
+ glewInit();
glutReshapeFunc(Reshape);
glutKeyboardFunc(Key);
glutSpecialFunc(SpecialKey);
projects / mesa.git / blobdiff