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-rw-r--r--progs/glsl/Makefile92
-rw-r--r--progs/glsl/bitmap.c55
-rw-r--r--progs/glsl/brick.c134
-rw-r--r--progs/glsl/bump.c135
-rw-r--r--progs/glsl/deriv.c90
-rw-r--r--progs/glsl/mandelbrot.c121
-rw-r--r--progs/glsl/noise.c102
-rw-r--r--progs/glsl/points.c55
-rw-r--r--progs/glsl/texdemo1.c155
-rw-r--r--progs/glsl/toyball.c159
-rw-r--r--progs/glsl/trirast.c87
-rw-r--r--progs/glsl/twoside.c90
12 files changed, 200 insertions, 1075 deletions
diff --git a/progs/glsl/Makefile b/progs/glsl/Makefile
index 5ee7a8e3d4..64be144e0f 100644
--- a/progs/glsl/Makefile
+++ b/progs/glsl/Makefile
@@ -45,6 +45,7 @@ default: $(PROGS)
extfuncs.h: $(TOP)/progs/util/extfuncs.h
cp $< .
+
readtex.c: $(TOP)/progs/util/readtex.c
cp $< .
@@ -54,24 +55,97 @@ readtex.h: $(TOP)/progs/util/readtex.h
readtex.o: readtex.c readtex.h
$(CC) -c -I$(INCDIR) $(CFLAGS) readtex.c
-bitmap.c: extfuncs.h
-brick.c: extfuncs.h
+shaderutil.c: $(TOP)/progs/util/shaderutil.c
+ cp $< .
+
+shaderutil.h: $(TOP)/progs/util/shaderutil.h
+ cp $< .
+
+shaderutil.o: shaderutil.c shaderutil.h
+ $(CC) -c -I$(INCDIR) $(CFLAGS) shaderutil.c
+
+
+
+bitmap.o: bitmap.c extfuncs.h shaderutil.h
+ $(CC) -c -I$(INCDIR) $(CFLAGS) bitmap.c
+
+bitmap: bitmap.o shaderutil.o
+ $(CC) -I$(INCDIR) $(CFLAGS) $(LDFLAGS) bitmap.o shaderutil.o $(LIBS) -o $@
+
+
+brick.o: brick.c extfuncs.h shaderutil.h
+ $(CC) -c -I$(INCDIR) $(CFLAGS) brick.c
+
+brick: brick.o shaderutil.o
+ $(CC) -I$(INCDIR) $(CFLAGS) $(LDFLAGS) brick.o shaderutil.o $(LIBS) -o $@
+
+
+bump.o: bump.c extfuncs.h shaderutil.h
+ $(CC) -c -I$(INCDIR) $(CFLAGS) bump.c
+
+bump: bump.o shaderutil.o
+ $(CC) -I$(INCDIR) $(CFLAGS) $(LDFLAGS) bump.o shaderutil.o $(LIBS) -o $@
+
+
+deriv.o: deriv.c extfuncs.h shaderutil.h
+ $(CC) -c -I$(INCDIR) $(CFLAGS) deriv.c
+
+deriv: deriv.o shaderutil.o
+ $(CC) -I$(INCDIR) $(CFLAGS) $(LDFLAGS) deriv.o shaderutil.o $(LIBS) -o $@
-bump.c: extfuncs.h
-mandelbrot.c: extfuncs.h
+mandelbrot.o: mandelbrot.c extfuncs.h shaderutil.h
+ $(CC) -c -I$(INCDIR) $(CFLAGS) mandelbrot.c
-points.c: extfuncs.h
+mandelbrot: mandelbrot.o shaderutil.o
+ $(CC) -I$(INCDIR) $(CFLAGS) $(LDFLAGS) mandelbrot.o shaderutil.o $(LIBS) -o $@
-toyball.c: extfuncs.h
-texdemo1: texdemo1.o readtex.o
- $(CC) -I$(INCDIR) $(CFLAGS) $(LDFLAGS) texdemo1.o readtex.o $(LIBS) -o $@
+noise.o: noise.c extfuncs.h shaderutil.h
+ $(CC) -c -I$(INCDIR) $(CFLAGS) noise.c
-texdemo1.o: texdemo1.c readtex.h extfuncs.h
+noise: noise.o shaderutil.o
+ $(CC) -I$(INCDIR) $(CFLAGS) $(LDFLAGS) noise.o shaderutil.o $(LIBS) -o $@
+
+
+points.o: points.c extfuncs.h shaderutil.h
+ $(CC) -c -I$(INCDIR) $(CFLAGS) points.c
+
+points: points.o shaderutil.o
+ $(CC) -I$(INCDIR) $(CFLAGS) $(LDFLAGS) points.o shaderutil.o $(LIBS) -o $@
+
+
+texdemo1.o: texdemo1.c readtex.h extfuncs.h shaderutil.h
$(CC) -c -I$(INCDIR) $(CFLAGS) texdemo1.c
+texdemo1: texdemo1.o readtex.o shaderutil.o
+ $(CC) -I$(INCDIR) $(CFLAGS) $(LDFLAGS) texdemo1.o readtex.o shaderutil.o $(LIBS) -o $@
+
+
+toyball.o: toyball.c extfuncs.h shaderutil.h
+ $(CC) -c -I$(INCDIR) $(CFLAGS) toyball.c
+
+toyball: toyball.o shaderutil.o
+ $(CC) -I$(INCDIR) $(CFLAGS) $(LDFLAGS) toyball.o shaderutil.o $(LIBS) -o $@
+
+
+twoside.o: twoside.c extfuncs.h shaderutil.h
+ $(CC) -c -I$(INCDIR) $(CFLAGS) twoside.c
+
+twoside: twoside.o shaderutil.o
+ $(CC) -I$(INCDIR) $(CFLAGS) $(LDFLAGS) twoside.o shaderutil.o $(LIBS) -o $@
+
+
+trirast.o: trirast.c extfuncs.h shaderutil.h
+ $(CC) -c -I$(INCDIR) $(CFLAGS) trirast.c
+
+trirast: trirast.o shaderutil.o
+ $(CC) -I$(INCDIR) $(CFLAGS) $(LDFLAGS) trirast.o shaderutil.o $(LIBS) -o $@
+
+
+
+
clean:
-rm -f $(PROGS)
diff --git a/progs/glsl/bitmap.c b/progs/glsl/bitmap.c
index 4b62686cbf..d488ec6cb9 100644
--- a/progs/glsl/bitmap.c
+++ b/progs/glsl/bitmap.c
@@ -13,6 +13,7 @@
#include <GL/glut.h>
#include <GL/glext.h>
#include "extfuncs.h"
+#include "shaderutil.h"
static GLuint FragShader;
@@ -247,40 +248,6 @@ MakeBitmapTextures(void)
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, "fslight: problem compiling shader:\n%s\n", log);
- exit(1);
- }
-}
-
-
-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);
- }
-}
-
-
-static void
Init(void)
{
/* Fragment shader: modulate raster color by texture, discard fragments
@@ -306,28 +273,16 @@ Init(void)
" gl_TexCoord[0] = gl_MultiTexCoord0; \n"
" gl_FrontColor = gl_Color; \n"
"}\n";
- const char *version;
- version = (const char *) glGetString(GL_VERSION);
- if (version[0] != '2' || version[1] != '.') {
- printf("This program requires OpenGL 2.x, found %s\n", version);
+ if (!ShadersSupported())
exit(1);
- }
- printf("GL_RENDERER = %s\n",(const char *) glGetString(GL_RENDERER));
GetExtensionFuncs();
- FragShader = glCreateShader_func(GL_FRAGMENT_SHADER);
- LoadAndCompileShader(FragShader, fragShaderText);
-
- VertShader = glCreateShader_func(GL_VERTEX_SHADER);
- LoadAndCompileShader(VertShader, vertShaderText);
+ VertShader = CompileShaderText(GL_VERTEX_SHADER, vertShaderText);
+ FragShader = CompileShaderText(GL_FRAGMENT_SHADER, fragShaderText);
+ Program = LinkShaders(VertShader, FragShader);
- Program = glCreateProgram_func();
- glAttachShader_func(Program, FragShader);
- glAttachShader_func(Program, VertShader);
- glLinkProgram_func(Program);
- CheckLink(Program);
glUseProgram_func(Program);
uScale = glGetUniformLocation_func(Program, "scale");
diff --git a/progs/glsl/brick.c b/progs/glsl/brick.c
index 522698b5d4..4be266622b 100644
--- a/progs/glsl/brick.c
+++ b/progs/glsl/brick.c
@@ -13,6 +13,7 @@
#include <GL/glut.h>
#include <GL/glext.h>
#include "extfuncs.h"
+#include "shaderutil.h"
static char *FragProgFile = "CH06-brick.frag.txt";
@@ -23,23 +24,15 @@ static GLuint fragShader;
static GLuint vertShader;
static GLuint program;
-
-struct uniform_info {
- const char *name;
- GLuint size;
- GLint location;
- GLfloat value[4];
-};
-
static struct uniform_info Uniforms[] = {
/* vert */
- { "LightPosition", 3, -1, { 0.1, 0.1, 9.0, 0} },
+ { "LightPosition", 3, GL_FLOAT, { 0.1, 0.1, 9.0, 0}, -1 },
/* frag */
- { "BrickColor", 3, -1, { 0.8, 0.2, 0.2, 0 } },
- { "MortarColor", 3, -1, { 0.6, 0.6, 0.6, 0 } },
- { "BrickSize", 2, -1, { 1.0, 0.3, 0, 0 } },
- { "BrickPct", 2, -1, { 0.9, 0.8, 0, 0 } },
- { NULL, 0, 0, { 0, 0, 0, 0 } }
+ { "BrickColor", 3, GL_FLOAT, { 0.8, 0.2, 0.2, 0 }, -1 },
+ { "MortarColor", 3, GL_FLOAT, { 0.6, 0.6, 0.6, 0 }, -1 },
+ { "BrickSize", 2, GL_FLOAT, { 1.0, 0.3, 0, 0 }, -1 },
+ { "BrickPct", 2, GL_FLOAT, { 0.9, 0.8, 0, 0 }, -1 },
+ END_OF_UNIFORMS
};
static GLint win = 0;
@@ -146,121 +139,20 @@ SpecialKey(int key, int x, int y)
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, "brick: 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, "brick: Unable to open shader file %s\n", filename);
- exit(1);
- }
-
- n = fread(buffer, 1, max, f);
- printf("brick: 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);*/
- }
+ if (!ShadersSupported())
+ exit(1);
GetExtensionFuncs();
- vertShader = glCreateShader_func(GL_VERTEX_SHADER);
- ReadShader(vertShader, VertProgFile);
-
- 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);
- 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();
- }
- }
+ InitUniforms(program, Uniforms);
assert(glGetError() == 0);
diff --git a/progs/glsl/bump.c b/progs/glsl/bump.c
index 11f87ab127..e42421d489 100644
--- a/progs/glsl/bump.c
+++ b/progs/glsl/bump.c
@@ -13,6 +13,7 @@
#include <GL/glu.h>
#include <GL/glext.h>
#include "extfuncs.h"
+#include "shaderutil.h"
static char *FragProgFile = "CH11-bumpmap.frag.txt";
@@ -24,20 +25,13 @@ static GLuint vertShader;
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", 3, GL_FLOAT, { 0.57737, 0.57735, 0.57735, 0.0 }, -1 },
+ { "SurfaceColor", 3, GL_FLOAT, { 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;
@@ -232,100 +226,18 @@ SpecialKey(int key, int x, int y)
}
-
-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));
+ if (!ShadersSupported())
+ exit(1);
GetExtensionFuncs();
- vertShader = glCreateShader_func(GL_VERTEX_SHADER);
- ReadShader(vertShader, VertProgFile);
-
- 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);
assert(glIsProgram_func(program));
@@ -336,28 +248,7 @@ Init(void)
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();
- }
- }
+ InitUniforms(program, Uniforms);
CheckError(__LINE__);
diff --git a/progs/glsl/deriv.c b/progs/glsl/deriv.c
index 8b652bc1e4..e69f0b82c4 100644
--- a/progs/glsl/deriv.c
+++ b/progs/glsl/deriv.c
@@ -17,6 +17,7 @@
#include <GL/glut.h>
#include <GL/glext.h>
#include "extfuncs.h"
+#include "shaderutil.h"
static char *FragProgFile = NULL;
@@ -159,68 +160,6 @@ MakeRect(void)
}
-
-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, "fslight: problem compiling shader:\n%s\n", log);
- exit(1);
- }
-}
-
-
-/**
- * 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, "fslight: Unable to open shader file %s\n", filename);
- exit(1);
- }
-
- n = fread(buffer, 1, max, f);
- printf("fslight: 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);
- }
-}
-
-
static void
Init(void)
{
@@ -234,33 +173,16 @@ Init(void)
" gl_Position = gl_ModelViewProjectionMatrix * gl_Vertex;\n"
" gl_TexCoord[0] = gl_MultiTexCoord0;\n"
"}\n";
- const char *version;
- version = (const char *) glGetString(GL_VERSION);
- if (version[0] != '2' || version[1] != '.') {
- printf("This program requires OpenGL 2.x, found %s\n", version);
+ if (!ShadersSupported())
exit(1);
- }
GetExtensionFuncs();
- fragShader = glCreateShader_func(GL_FRAGMENT_SHADER);
- if (FragProgFile)
- ReadShader(fragShader, FragProgFile);
- else
- LoadAndCompileShader(fragShader, fragShaderText);
-
- vertShader = glCreateShader_func(GL_VERTEX_SHADER);
- if (VertProgFile)
- ReadShader(vertShader, VertProgFile);
- else
- LoadAndCompileShader(vertShader, vertShaderText);
-
- program = glCreateProgram_func();
- glAttachShader_func(program, fragShader);
- glAttachShader_func(program, vertShader);
- glLinkProgram_func(program);
- CheckLink(program);
+ vertShader = CompileShaderText(GL_VERTEX_SHADER, vertShaderText);
+ fragShader = CompileShaderText(GL_FRAGMENT_SHADER, fragShaderText);
+ program = LinkShaders(vertShader, fragShader);
+
glUseProgram_func(program);
/*assert(glGetError() == 0);*/
diff --git a/progs/glsl/mandelbrot.c b/progs/glsl/mandelbrot.c
index e7b2b04b0d..a15aad981c 100644
--- a/progs/glsl/mandelbrot.c
+++ b/progs/glsl/mandelbrot.c
@@ -13,6 +13,7 @@
#include <GL/glut.h>
#include <GL/glext.h>
#include "extfuncs.h"
+#include "shaderutil.h"
static char *FragProgFile = "CH18-mandel.frag.txt";
@@ -24,28 +25,21 @@ static GLuint vertShader;
static GLuint program;
-struct uniform_info {
- const char *name;
- GLuint size;
- GLint location;
- GLfloat value[4];
-};
-
static struct uniform_info Uniforms[] = {
/* vert */
- { "LightPosition", 3, -1, { 0.1, 0.1, 9.0, 0} },
- { "SpecularContribution", 1, -1, { 0.5, 0, 0, 0 } },
- { "DiffuseContribution", 1, -1, { 0.5, 0, 0, 0 } },
- { "Shininess", 1, -1, { 20.0, 0, 0, 0 } },
+ { "LightPosition", 3, GL_FLOAT, { 0.1, 0.1, 9.0, 0}, -1 },
+ { "SpecularContribution", 1, GL_FLOAT, { 0.5, 0, 0, 0 }, -1 },
+ { "DiffuseContribution", 1, GL_FLOAT, { 0.5, 0, 0, 0 }, -1 },
+ { "Shininess", 1, GL_FLOAT, { 20.0, 0, 0, 0 }, -1 },
/* frag */
- { "MaxIterations", 1, -1, { 12, 0, 0, 0 } },
- { "Zoom", 1, -1, { 0.125, 0, 0, 0 } },
- { "Xcenter", 1, -1, { -1.5, 0, 0, 0 } },
- { "Ycenter", 1, -1, { .005, 0, 0, 0 } },
- { "InnerColor", 3, -1, { 1, 0, 0, 0 } },
- { "OuterColor1", 3, -1, { 0, 1, 0, 0 } },
- { "OuterColor2", 3, -1, { 0, 0, 1, 0 } },
- { NULL, 0, 0, { 0, 0, 0, 0 } }
+ { "MaxIterations", 1, GL_FLOAT, { 12, 0, 0, 0 }, -1 },
+ { "Zoom", 1, GL_FLOAT, { 0.125, 0, 0, 0 }, -1 },
+ { "Xcenter", 1, GL_FLOAT, { -1.5, 0, 0, 0 }, -1 },
+ { "Ycenter", 1, GL_FLOAT, { .005, 0, 0, 0 }, -1 },
+ { "InnerColor", 3, GL_FLOAT, { 1, 0, 0, 0 }, -1 },
+ { "OuterColor1", 3, GL_FLOAT, { 0, 1, 0, 0 }, -1 },
+ { "OuterColor2", 3, GL_FLOAT, { 0, 0, 1, 0 }, -1 },
+ END_OF_UNIFORMS
};
static GLint win = 0;
@@ -157,99 +151,20 @@ SpecialKey(int key, int x, int y)
}
-
-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, "mandelbrot: 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, "mandelbrot: Unable to open shader file %s\n", filename);
- exit(1);
- }
-
- n = fread(buffer, 1, max, f);
- printf("mandelbrot: 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);*/
- }
+ if (!ShadersSupported())
+ exit(1);
GetExtensionFuncs();
- vertShader = glCreateShader_func(GL_VERTEX_SHADER);
- ReadShader(vertShader, VertProgFile);
-
- 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);
for (i = 0; Uniforms[i].name; i++) {
diff --git a/progs/glsl/noise.c b/progs/glsl/noise.c
index adccd1a7c8..9da71ac775 100644
--- a/progs/glsl/noise.c
+++ b/progs/glsl/noise.c
@@ -12,6 +12,7 @@
#include <GL/glut.h>
#include <GL/glext.h>
#include "extfuncs.h"
+#include "shaderutil.h"
static const char *VertShaderText =
@@ -34,18 +35,11 @@ static const char *FragShaderText =
"}\n";
-struct uniform_info {
- const char *name;
- GLuint size;
- GLint location;
- GLfloat value[4];
-};
-
static struct uniform_info Uniforms[] = {
- { "Scale", 4, -1, { 0.5, 0.4, 0.0, 0} },
- { "Bias", 4, -1, { 0.5, 0.3, 0.0, 0} },
- { "Slice", 1, -1, { 0.5, 0, 0, 0} },
- { NULL, 0, 0, { 0, 0, 0, 0 } }
+ { "Scale", 4, GL_FLOAT, { 0.5, 0.4, 0.0, 0}, -1 },
+ { "Bias", 4, GL_FLOAT, { 0.5, 0.3, 0.0, 0}, -1 },
+ { "Slice", 1, GL_FLOAT, { 0.5, 0, 0, 0}, -1 },
+ END_OF_UNIFORMS
};
/* program/shader objects */
@@ -175,94 +169,20 @@ SpecialKey(int key, int x, int y)
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, "noise: problem compiling shader: %s\n", log);
- exit(1);
- }
- else {
- printf("Shader compiled OK\n");
- }
-}
-
-
-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);*/
- }
+ if (!ShadersSupported())
+ exit(1);
GetExtensionFuncs();
- vertShader = glCreateShader_func(GL_VERTEX_SHADER);
- LoadAndCompileShader(vertShader, VertShaderText);
-
- fragShader = glCreateShader_func(GL_FRAGMENT_SHADER);
- LoadAndCompileShader(fragShader, FragShaderText);
+ vertShader = CompileShaderText(GL_VERTEX_SHADER, VertShaderText);
+ fragShader = CompileShaderText(GL_FRAGMENT_SHADER, FragShaderText);
+ program = LinkShaders(vertShader, fragShader);
- program = glCreateProgram_func();
- glAttachShader_func(program, fragShader);
- glAttachShader_func(program, vertShader);
- glLinkProgram_func(program);
- CheckLink(program);
glUseProgram_func(program);
- 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();
- }
- }
+ InitUniforms(program, Uniforms);
assert(glGetError() == 0);
diff --git a/progs/glsl/points.c b/progs/glsl/points.c
index 85115de504..392dc4db85 100644
--- a/progs/glsl/points.c
+++ b/progs/glsl/points.c
@@ -14,6 +14,7 @@
#include <GL/glut.h>
#include <GL/glext.h>
#include "extfuncs.h"
+#include "shaderutil.h"
static GLuint FragShader;
@@ -182,40 +183,6 @@ SpecialKey(int key, int x, int y)
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, "fslight: problem compiling shader:\n%s\n", log);
- exit(1);
- }
-}
-
-
-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);
- }
-}
-
-
-static void
Init(void)
{
/* Fragment shader: compute distance of fragment from center of point
@@ -254,28 +221,16 @@ Init(void)
" gl_TexCoord[0] = gl_MultiTexCoord0; \n"
" gl_FrontColor = gl_Color; \n"
"}\n";
- const char *version;
- version = (const char *) glGetString(GL_VERSION);
- if (version[0] != '2' || version[1] != '.') {
- printf("This program requires OpenGL 2.x, found %s\n", version);
+ if (!ShadersSupported())
exit(1);
- }
- printf("GL_RENDERER = %s\n",(const char *) glGetString(GL_RENDERER));
GetExtensionFuncs();
- FragShader = glCreateShader_func(GL_FRAGMENT_SHADER);
- LoadAndCompileShader(FragShader, fragShaderText);
-
- VertShader = glCreateShader_func(GL_VERTEX_SHADER);
- LoadAndCompileShader(VertShader, vertShaderText);
+ VertShader = CompileShaderText(GL_VERTEX_SHADER, vertShaderText);
+ FragShader = CompileShaderText(GL_FRAGMENT_SHADER, fragShaderText);
+ Program = LinkShaders(VertShader, FragShader);
- Program = glCreateProgram_func();
- glAttachShader_func(Program, FragShader);
- glAttachShader_func(Program, VertShader);
- glLinkProgram_func(Program);
- CheckLink(Program);
glUseProgram_func(Program);
uViewportInv = glGetUniformLocation_func(Program, "viewportInv");
diff --git a/progs/glsl/texdemo1.c b/progs/glsl/texdemo1.c
index d29ecf452b..3dd19eaf4b 100644
--- a/progs/glsl/texdemo1.c
+++ b/progs/glsl/texdemo1.c
@@ -31,6 +31,7 @@
#include "GL/glut.h"
#include "readtex.h"
#include "extfuncs.h"
+#include "shaderutil.h"
static const char *Demo = "texdemo1";
@@ -50,39 +51,20 @@ static GLfloat EyeDist = 10;
static GLboolean Anim = GL_TRUE;
-struct uniform_info {
- const char *name;
- GLuint size;
- GLint location;
- GLenum type; /**< GL_FLOAT or GL_INT */
- GLfloat value[4];
-};
-
static struct uniform_info ReflectUniforms[] = {
- { "cubeTex", 1, -1, GL_INT, { 0, 0, 0, 0 } },
- { "lightPos", 3, -1, GL_FLOAT, { 10, 10, 20, 0 } },
- { NULL, 0, 0, 0, { 0, 0, 0, 0 } }
+ { "cubeTex", 1, GL_INT, { 0, 0, 0, 0 }, -1 },
+ { "lightPos", 3, GL_FLOAT, { 10, 10, 20, 0 }, -1 },
+ END_OF_UNIFORMS
};
static struct uniform_info SimpleUniforms[] = {
- { "tex2d", 1, -1, GL_INT, { 1, 0, 0, 0 } },
- { "lightPos", 3, -1, GL_FLOAT, { 10, 10, 20, 0 } },
- { NULL, 0, 0, 0, { 0, 0, 0, 0 } }
+ { "tex2d", 1, GL_INT, { 1, 0, 0, 0 }, -1 },
+ { "lightPos", 3, GL_FLOAT, { 10, 10, 20, 0 }, -1 },
+ END_OF_UNIFORMS
};
static void
-CheckError(int line)
-{
- GLenum err = glGetError();
- if (err) {
- printf("GL Error %s (0x%x) at line %d\n",
- gluErrorString(err), (int) err, line);
- }
-}
-
-
-static void
DrawGround(GLfloat size)
{
glPushMatrix();
@@ -386,132 +368,19 @@ InitTextures(GLboolean useImageFiles)
}
-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, "%s: problem compiling shader: %s\n", Demo, 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, "%s: Unable to open shader file %s\n", Demo, filename);
- exit(1);
- }
-
- n = fread(buffer, 1, max, f);
- printf("%s: read %d bytes from shader file %s\n", Demo, 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 GLuint
CreateProgram(const char *vertProgFile, const char *fragProgFile,
struct uniform_info *uniforms)
{
- GLuint fragShader = 0, vertShader = 0, program = 0;
- GLint i;
-
- program = glCreateProgram_func();
- if (vertProgFile) {
- vertShader = glCreateShader_func(GL_VERTEX_SHADER);
- ReadShader(vertShader, vertProgFile);
- glAttachShader_func(program, vertShader);
- }
+ GLuint fragShader, vertShader, program;
- if (fragProgFile) {
- fragShader = glCreateShader_func(GL_FRAGMENT_SHADER);
- ReadShader(fragShader, fragProgFile);
- glAttachShader_func(program, fragShader);
- }
-
- glLinkProgram_func(program);
- CheckLink(program);
+ vertShader = CompileShaderFile(GL_VERTEX_SHADER, vertProgFile);
+ fragShader = CompileShaderFile(GL_FRAGMENT_SHADER, fragProgFile);
+ program = LinkShaders(vertShader, fragShader);
glUseProgram_func(program);
- assert(glIsProgram_func(program));
- assert(glIsShader_func(fragShader));
- assert(glIsShader_func(vertShader));
-
- 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:
- 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);
- 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();
- }
- }
-
- CheckError(__LINE__);
+ InitUniforms(program, uniforms);
return program;
}
diff --git a/progs/glsl/toyball.c b/progs/glsl/toyball.c
index 3aa096161a..b870435f66 100644
--- a/progs/glsl/toyball.c
+++ b/progs/glsl/toyball.c
@@ -13,6 +13,7 @@
#include <GL/glut.h>
#include <GL/glext.h>
#include "extfuncs.h"
+#include "shaderutil.h"
static char *FragProgFile = "CH11-toyball.frag.txt";
@@ -24,30 +25,23 @@ static GLuint vertShader;
static GLuint program;
-struct uniform_info {
- const char *name;
- GLuint size;
- GLint location;
- GLfloat value[4];
-};
-
static struct uniform_info Uniforms[] = {
- { "LightDir", 4, -1, { 0.57737, 0.57735, 0.57735, 0.0 } },
- { "HVector", 4, -1, { 0.32506, 0.32506, 0.88808, 0.0 } },
- { "BallCenter", 4, -1, { 0.0, 0.0, 0.0, 1.0 } },
- { "SpecularColor", 4, -1, { 0.4, 0.4, 0.4, 60.0 } },
- { "Red", 4, -1, { 0.6, 0.0, 0.0, 1.0 } },
- { "Blue", 4, -1, { 0.0, 0.3, 0.6, 1.0 } },
- { "Yellow", 4, -1, { 0.6, 0.5, 0.0, 1.0 } },
- { "HalfSpace0", 4, -1, { 1.0, 0.0, 0.0, 0.2 } },
- { "HalfSpace1", 4, -1, { 0.309016994, 0.951056516, 0.0, 0.2 } },
- { "HalfSpace2", 4, -1, { -0.809016994, 0.587785252, 0.0, 0.2 } },
- { "HalfSpace3", 4, -1, { -0.809016994, -0.587785252, 0.0, 0.2 } },
- { "HalfSpace4", 4, -1, { 0.309116994, -0.951056516, 0.0, 0.2 } },
- { "InOrOutInit", 1, -1, { -3.0, 0, 0, 0 } },
- { "StripeWidth", 1, -1, { 0.3, 0, 0, 0 } },
- { "FWidth", 1, -1, { 0.005, 0, 0, 0 } },
- { NULL, 0, 0, { 0, 0, 0, 0 } }
+ { "LightDir", 4, GL_FLOAT, { 0.57737, 0.57735, 0.57735, 0.0 }, -1 },
+ { "HVector", 4, GL_FLOAT, { 0.32506, 0.32506, 0.88808, 0.0 }, -1 },
+ { "BallCenter", 4, GL_FLOAT, { 0.0, 0.0, 0.0, 1.0 }, -1 },
+ { "SpecularColor", 4, GL_FLOAT, { 0.4, 0.4, 0.4, 60.0 }, -1 },
+ { "Red", 4, GL_FLOAT, { 0.6, 0.0, 0.0, 1.0 }, -1 },
+ { "Blue", 4, GL_FLOAT, { 0.0, 0.3, 0.6, 1.0 }, -1 },
+ { "Yellow", 4, GL_FLOAT, { 0.6, 0.5, 0.0, 1.0 }, -1 },
+ { "HalfSpace0", 4, GL_FLOAT, { 1.0, 0.0, 0.0, 0.2 }, -1 },
+ { "HalfSpace1", 4, GL_FLOAT, { 0.309016994, 0.951056516, 0.0, 0.2 }, -1 },
+ { "HalfSpace2", 4, GL_FLOAT, { -0.809016994, 0.587785252, 0.0, 0.2 }, -1 },
+ { "HalfSpace3", 4, GL_FLOAT, { -0.809016994, -0.587785252, 0.0, 0.2 }, -1 },
+ { "HalfSpace4", 4, GL_FLOAT, { 0.309116994, -0.951056516, 0.0, 0.2 }, -1 },
+ { "InOrOutInit", 1, GL_FLOAT, { -3.0, 0, 0, 0 }, -1 },
+ { "StripeWidth", 1, GL_FLOAT, { 0.3, 0, 0, 0 }, -1 },
+ { "FWidth", 1, GL_FLOAT, { 0.005, 0, 0, 0 }, -1 },
+ END_OF_UNIFORMS
};
static GLint win = 0;
@@ -172,127 +166,20 @@ SpecialKey(int key, int x, int y)
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, "toyball: 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, "toyball: Unable to open shader file %s\n", filename);
- exit(1);
- }
-
- n = fread(buffer, 1, max, f);
- printf("toyball: 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));
+ if (!ShadersSupported())
+ exit(1);
GetExtensionFuncs();
- vertShader = glCreateShader_func(GL_VERTEX_SHADER);
- ReadShader(vertShader, VertProgFile);
-
- 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);
- assert(glIsProgram_func(program));
- assert(glIsShader_func(fragShader));
- assert(glIsShader_func(vertShader));
-
-
- 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();
- }
- }
+ InitUniforms(program, Uniforms);
assert(glGetError() == 0);
diff --git a/progs/glsl/trirast.c b/progs/glsl/trirast.c
index 2842755447..67cbac0546 100644
--- a/progs/glsl/trirast.c
+++ b/progs/glsl/trirast.c
@@ -19,6 +19,7 @@
#include <GL/glut.h>
#include <GL/glext.h>
#include "extfuncs.h"
+#include "shaderutil.h"
static GLint WinWidth = 300, WinHeight = 300;
@@ -169,67 +170,6 @@ Key(unsigned char key, int x, int y)
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, "fslight: problem compiling shader:\n%s\n", log);
- exit(1);
- }
-}
-
-
-/**
- * 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, "fslight: Unable to open shader file %s\n", filename);
- exit(1);
- }
-
- n = fread(buffer, 1, max, f);
- printf("fslight: 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);
- }
-}
-
-
-static void
Init(void)
{
static const char *fragShaderText =
@@ -252,33 +192,16 @@ Init(void)
"void main() {\n"
" gl_Position = gl_ModelViewProjectionMatrix * gl_Vertex;\n"
"}\n";
- const char *version;
- version = (const char *) glGetString(GL_VERSION);
- if (version[0] != '2' || version[1] != '.') {
- printf("This program requires OpenGL 2.x, found %s\n", version);
+ if (!ShadersSupported())
exit(1);
- }
GetExtensionFuncs();
- fragShader = glCreateShader_func(GL_FRAGMENT_SHADER);
- if (FragProgFile)
- ReadShader(fragShader, FragProgFile);
- else
- LoadAndCompileShader(fragShader, fragShaderText);
-
- vertShader = glCreateShader_func(GL_VERTEX_SHADER);
- if (VertProgFile)
- ReadShader(vertShader, VertProgFile);
- else
- LoadAndCompileShader(vertShader, vertShaderText);
+ vertShader = CompileShaderText(GL_VERTEX_SHADER, vertShaderText);
+ fragShader = CompileShaderText(GL_FRAGMENT_SHADER, fragShaderText);
+ program = LinkShaders(vertShader, fragShader);
- program = glCreateProgram_func();
- glAttachShader_func(program, fragShader);
- glAttachShader_func(program, vertShader);
- glLinkProgram_func(program);
- CheckLink(program);
glUseProgram_func(program);
uv0 = glGetUniformLocation_func(program, "v0");
diff --git a/progs/glsl/twoside.c b/progs/glsl/twoside.c
index 1db92b5512..77977be536 100644
--- a/progs/glsl/twoside.c
+++ b/progs/glsl/twoside.c
@@ -16,9 +16,9 @@
#include <GL/glut.h>
#include <GL/glext.h>
#include "extfuncs.h"
+#include "shaderutil.h"
-static const char *Prog = "twoside";
static GLint WinWidth = 300, WinHeight = 300;
static char *FragProgFile = NULL;
static char *VertProgFile = NULL;
@@ -168,67 +168,6 @@ Key(unsigned char key, int x, int y)
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, "%s: problem compiling shader:\n%s\n", Prog, log);
- exit(1);
- }
-}
-
-
-/**
- * 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, "%s: Unable to open shader file %s\n", Prog, filename);
- exit(1);
- }
-
- n = fread(buffer, 1, max, f);
- printf("%s: read %d bytes from shader file %s\n", Prog, 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);
- }
-}
-
-
-static void
Init(void)
{
static const char *fragShaderText =
@@ -255,33 +194,16 @@ Init(void)
" } \n"
" gl_Position = ftransform(); \n"
"} \n";
- const char *version;
- version = (const char *) glGetString(GL_VERSION);
- if (version[0] != '2' || version[1] != '.') {
- printf("This program requires OpenGL 2.x, found %s\n", version);
+ if (!ShadersSupported())
exit(1);
- }
GetExtensionFuncs();
- fragShader = glCreateShader_func(GL_FRAGMENT_SHADER);
- if (FragProgFile)
- ReadShader(fragShader, FragProgFile);
- else
- LoadAndCompileShader(fragShader, fragShaderText);
-
- vertShader = glCreateShader_func(GL_VERTEX_SHADER);
- if (VertProgFile)
- ReadShader(vertShader, VertProgFile);
- else
- LoadAndCompileShader(vertShader, vertShaderText);
-
- program = glCreateProgram_func();
- glAttachShader_func(program, fragShader);
- glAttachShader_func(program, vertShader);
- glLinkProgram_func(program);
- CheckLink(program);
+ vertShader = CompileShaderText(GL_VERTEX_SHADER, vertShaderText);
+ fragShader = CompileShaderText(GL_FRAGMENT_SHADER, fragShaderText);
+ program = LinkShaders(vertShader, fragShader);
+
glUseProgram_func(program);
u_fragface = glGetUniformLocation_func(program, "fragface");
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-25 06:20:32 +0000