1 files changed, 121 insertions, 30 deletions

diff --git a/progs/util/shaderutil.c b/progs/util/shaderutil.c
index 13b68d90e0..489e71cc30 100644
--- a/progs/util/shaderutil.c
+++ b/progs/util/shaderutil.c
@@ -9,21 +9,12 @@
 #include <assert.h>
 #include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
 #include <GL/glew.h>
 #include <GL/glut.h>
 #include "shaderutil.h"
 
 
-static void
-Init(void)
-{
-   static GLboolean firstCall = GL_TRUE;
-   if (firstCall) {
-      firstCall = GL_FALSE;
-   }
-}
-
-
 GLboolean
 ShadersSupported(void)
 {
@@ -47,8 +38,6 @@ CompileShaderText(GLenum shaderType, const char *text)
    GLuint shader;
    GLint stat;
 
-   Init();
-
    shader = glCreateShader(shaderType);
    glShaderSource(shader, 1, (const GLchar **) &text, NULL);
    glCompileShader(shader);
@@ -79,9 +68,6 @@ CompileShaderFile(GLenum shaderType, const char *filename)
    GLuint shader;
    FILE *f;
 
-   Init();
-
-
    f = fopen(filename, "r");
    if (!f) {
       fprintf(stderr, "Unable to open shader file %s\n", filename);
@@ -136,7 +122,7 @@ LinkShaders(GLuint vertShader, GLuint fragShader)
 
 
 void
-InitUniforms(GLuint program, struct uniform_info uniforms[])
+SetUniformValues(GLuint program, struct uniform_info uniforms[])
 {
    GLuint i;
 
@@ -144,28 +130,133 @@ InitUniforms(GLuint program, struct uniform_info uniforms[])
       uniforms[i].location
          = glGetUniformLocation(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(uniforms[i].location,
-                             (GLint) uniforms[i].value[0]);
-         else
-            glUniform1fv(uniforms[i].location, 1, uniforms[i].value);
+      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:
+         glUniform1i(uniforms[i].location,
+                     (GLint) uniforms[i].value[0]);
+         break;
+      case GL_FLOAT:
+         glUniform1fv(uniforms[i].location, 1, uniforms[i].value);
          break;
-      case 2:
+      case GL_FLOAT_VEC2:
          glUniform2fv(uniforms[i].location, 1, uniforms[i].value);
          break;
-      case 3:
+      case GL_FLOAT_VEC3:
          glUniform3fv(uniforms[i].location, 1, uniforms[i].value);
          break;
-      case 4:
+      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);
+   }
+}