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Added new directory of GL shading language demos: glsl
This commit is contained in:
Brian
parent
f6507157e2
commit
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7 changed files with 845 additions and 0 deletions
36
progs/glsl/CH06-brick.frag.txt
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36
progs/glsl/CH06-brick.frag.txt
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//
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// Fragment shader for procedural bricks
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//
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// Authors: Dave Baldwin, Steve Koren, Randi Rost
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// based on a shader by Darwyn Peachey
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//
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// Copyright (c) 2002-2006 3Dlabs Inc. Ltd.
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//
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// See 3Dlabs-License.txt for license information
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//
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uniform vec3 BrickColor, MortarColor;
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uniform vec2 BrickSize;
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uniform vec2 BrickPct;
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varying vec2 MCposition;
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varying float LightIntensity;
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void main()
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{
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vec3 color;
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vec2 position, useBrick;
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position = MCposition / BrickSize;
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if (fract(position.y * 0.5) > 0.5)
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position.x += 0.5;
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position = fract(position);
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useBrick = step(position, BrickPct);
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color = mix(MortarColor, BrickColor, useBrick.x * useBrick.y);
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color *= LightIntensity;
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gl_FragColor = vec4(color, 1.0);
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}
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41
progs/glsl/CH06-brick.vert.txt
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41
progs/glsl/CH06-brick.vert.txt
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//
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// Vertex shader for procedural bricks
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//
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// Authors: Dave Baldwin, Steve Koren, Randi Rost
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// based on a shader by Darwyn Peachey
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//
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// Copyright (c) 2002-2006 3Dlabs Inc. Ltd.
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//
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// See 3Dlabs-License.txt for license information
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//
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uniform vec3 LightPosition;
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const float SpecularContribution = 0.3;
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const float DiffuseContribution = 1.0 - SpecularContribution;
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varying float LightIntensity;
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varying vec2 MCposition;
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void main()
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{
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vec3 ecPosition = vec3(gl_ModelViewMatrix * gl_Vertex);
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vec3 tnorm = normalize(gl_NormalMatrix * gl_Normal);
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vec3 lightVec = normalize(LightPosition - ecPosition);
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vec3 reflectVec = reflect(-lightVec, tnorm);
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vec3 viewVec = normalize(-ecPosition);
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float diffuse = max(dot(lightVec, tnorm), 0.0);
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float spec = 0.0;
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if (diffuse > 0.0)
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{
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spec = max(dot(reflectVec, viewVec), 0.0);
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spec = pow(spec, 16.0);
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}
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LightIntensity = DiffuseContribution * diffuse +
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SpecularContribution * spec;
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MCposition = gl_Vertex.xy;
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gl_Position = ftransform();
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}
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55
progs/glsl/CH18-mandel.frag.txt
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55
progs/glsl/CH18-mandel.frag.txt
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//
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// Fragment shader for drawing the Mandelbrot set
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//
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// Authors: Dave Baldwin, Steve Koren, Randi Rost
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// based on a shader by Michael Rivero
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//
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// Copyright (c) 2002-2005: 3Dlabs, Inc.
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//
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// See 3Dlabs-License.txt for license information
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//
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varying vec3 Position;
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varying float LightIntensity;
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uniform float MaxIterations;
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uniform float Zoom;
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uniform float Xcenter;
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uniform float Ycenter;
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uniform vec3 InnerColor;
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uniform vec3 OuterColor1;
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uniform vec3 OuterColor2;
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void main()
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{
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float real = Position.x * Zoom + Xcenter;
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float imag = Position.y * Zoom + Ycenter;
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float Creal = real; // Change this line...
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float Cimag = imag; // ...and this one to get a Julia set
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float r2 = 0.0;
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float iter;
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for (iter = 0.0; iter < MaxIterations && r2 < 4.0; ++iter)
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//nv: for (iter = 0.0; iter < 12 && r2 < 4.0; ++iter)
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{
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float tempreal = real;
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real = (tempreal * tempreal) - (imag * imag) + Creal;
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imag = 2.0 * tempreal * imag + Cimag;
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r2 = (real * real) + (imag * imag);
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}
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// Base the color on the number of iterations
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vec3 color;
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if (r2 < 4.0)
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color = InnerColor;
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else
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color = mix(OuterColor1, OuterColor2, fract(iter * 0.05));
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color *= LightIntensity;
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gl_FragColor = vec4(color, 1.0);
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}
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35
progs/glsl/CH18-mandel.vert.txt
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35
progs/glsl/CH18-mandel.vert.txt
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@ -0,0 +1,35 @@
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//
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// Vertex shader for drawing the Mandelbrot set
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//
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// Authors: Dave Baldwin, Steve Koren, Randi Rost
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// based on a shader by Michael Rivero
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//
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// Copyright (c) 2002-2005: 3Dlabs, Inc.
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//
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// See 3Dlabs-License.txt for license information
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//
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uniform vec3 LightPosition;
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uniform float SpecularContribution;
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uniform float DiffuseContribution;
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uniform float Shininess;
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varying float LightIntensity;
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varying vec3 Position;
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void main()
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{
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vec3 ecPosition = vec3(gl_ModelViewMatrix * gl_Vertex);
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vec3 tnorm = normalize(gl_NormalMatrix * gl_Normal);
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vec3 lightVec = normalize(LightPosition - ecPosition);
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vec3 reflectVec = reflect(-lightVec, tnorm);
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vec3 viewVec = normalize(-ecPosition);
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float spec = max(dot(reflectVec, viewVec), 0.0);
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spec = pow(spec, Shininess);
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LightIntensity = DiffuseContribution *
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max(dot(lightVec, tnorm), 0.0) +
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SpecularContribution * spec;
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Position = vec3(gl_MultiTexCoord0 - 0.5) * 5.0;
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gl_Position = ftransform();
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}
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50
progs/glsl/Makefile
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50
progs/glsl/Makefile
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# progs/demos/Makefile
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TOP = ../..
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include $(TOP)/configs/current
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INCDIR = $(TOP)/include
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OSMESA_LIBS = -L$(TOP)/$(LIB_DIR) -lglut -lOSMesa -lGLU -lGL $(APP_LIB_DEPS)
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OSMESA16_LIBS = -L$(TOP)/$(LIB_DIR) -lglut -lOSMesa16 -lGLU -lGL $(APP_LIB_DEPS)
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OSMESA32_LIBS = -L$(TOP)/$(LIB_DIR) -lglut -lOSMesa32 -lGLU -lGL $(APP_LIB_DEPS)
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LIB_DEP = $(TOP)/$(LIB_DIR)/$(GL_LIB_NAME) $(TOP)/$(LIB_DIR)/$(GLU_LIB_NAME) $(TOP)/$(LIB_DIR)/$(GLUT_LIB_NAME)
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PROGS = \
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brick \
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mandelbrot
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##### RULES #####
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.SUFFIXES:
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.SUFFIXES: .c
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# make executable from .c file:
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.c: $(LIB_DEP)
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$(CC) -I$(INCDIR) $(CFLAGS) $< $(APP_LIB_DEPS) -o $@
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##### TARGETS #####
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default: $(PROGS)
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$(PROGS):
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extfuncs.h: $(TOP)/progs/util/extfuncs.h
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cp $< .
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brick.c: extfuncs.h
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mandelbrot.c: extfuncs.h
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clean:
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-rm -f $(PROGS)
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-rm -f *.o *~
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-rm -f extfuncs.h
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311
progs/glsl/brick.c
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311
progs/glsl/brick.c
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/**
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* "Brick" shader demo. Uses the example shaders from chapter 6 of
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* the OpenGL Shading Language "orange" book.
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* 10 Jan 2007
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*/
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#include <assert.h>
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#include <string.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <math.h>
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#include <GL/gl.h>
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#include <GL/glut.h>
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#include <GL/glext.h>
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#include "extfuncs.h"
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static char *FragProgFile = "CH06-brick.frag.txt";
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static char *VertProgFile = "CH06-brick.vert.txt";
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/* program/shader objects */
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static GLuint fragShader;
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static GLuint vertShader;
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static GLuint program;
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struct uniform_info {
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const char *name;
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GLuint size;
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GLint location;
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GLfloat value[4];
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};
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static struct uniform_info Uniforms[] = {
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/* vert */
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{ "LightPosition", 3, -1, { 0.1, 0.1, 9.0, 0} },
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/* frag */
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{ "BrickColor", 3, -1, { 0.8, 0.2, 0.2, 0 } },
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{ "MortarColor", 3, -1, { 0.6, 0.6, 0.6, 0 } },
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{ "BrickSize", 2, -1, { 1.0, 0.3, 0, 0 } },
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{ "BrickPct", 2, -1, { 0.9, 0.8, 0, 0 } },
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{ NULL, 0, 0, { 0, 0, 0, 0 } }
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};
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static GLint win = 0;
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static GLfloat xRot = 0.0f, yRot = 0.0f, zRot = 0.0f;
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static void
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Redisplay(void)
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{
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glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
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glPushMatrix();
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glRotatef(xRot, 1.0f, 0.0f, 0.0f);
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glRotatef(yRot, 0.0f, 1.0f, 0.0f);
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glRotatef(zRot, 0.0f, 0.0f, 1.0f);
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glBegin(GL_POLYGON);
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glTexCoord2f(0, 0); glVertex2f(-2, -2);
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glTexCoord2f(1, 0); glVertex2f( 2, -2);
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glTexCoord2f(1, 1); glVertex2f( 2, 2);
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glTexCoord2f(0, 1); glVertex2f(-2, 2);
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glEnd();
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glPopMatrix();
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glutSwapBuffers();
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}
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static void
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Reshape(int width, int height)
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{
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glViewport(0, 0, width, height);
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glMatrixMode(GL_PROJECTION);
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glLoadIdentity();
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glFrustum(-1.0, 1.0, -1.0, 1.0, 5.0, 25.0);
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glMatrixMode(GL_MODELVIEW);
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glLoadIdentity();
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glTranslatef(0.0f, 0.0f, -15.0f);
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}
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static void
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CleanUp(void)
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{
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glDeleteShader_func(fragShader);
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glDeleteShader_func(vertShader);
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glDeleteProgram_func(program);
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glutDestroyWindow(win);
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}
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static void
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Key(unsigned char key, int x, int y)
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{
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(void) x;
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(void) y;
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switch(key) {
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case 'z':
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zRot -= 1.0;
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break;
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case 'Z':
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zRot += 1.0;
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break;
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case 27:
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CleanUp();
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exit(0);
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break;
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}
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glutPostRedisplay();
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}
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static void
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SpecialKey(int key, int x, int y)
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{
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const GLfloat step = 3.0f;
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(void) x;
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(void) y;
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switch(key) {
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case GLUT_KEY_UP:
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xRot -= step;
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break;
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case GLUT_KEY_DOWN:
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xRot += step;
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break;
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case GLUT_KEY_LEFT:
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yRot -= step;
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break;
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case GLUT_KEY_RIGHT:
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yRot += step;
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break;
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}
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glutPostRedisplay();
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}
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static void
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LoadAndCompileShader(GLuint shader, const char *text)
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{
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GLint stat;
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glShaderSource_func(shader, 1, (const GLchar **) &text, NULL);
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glCompileShader_func(shader);
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glGetShaderiv_func(shader, GL_COMPILE_STATUS, &stat);
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if (!stat) {
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GLchar log[1000];
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GLsizei len;
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glGetShaderInfoLog_func(shader, 1000, &len, log);
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fprintf(stderr, "brick: problem compiling shader: %s\n", log);
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exit(1);
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}
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else {
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printf("Shader compiled OK\n");
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}
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}
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/**
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* Read a shader from a file.
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*/
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static void
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ReadShader(GLuint shader, const char *filename)
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{
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const int max = 100*1000;
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int n;
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char *buffer = (char*) malloc(max);
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FILE *f = fopen(filename, "r");
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if (!f) {
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fprintf(stderr, "brick: Unable to open shader file %s\n", filename);
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exit(1);
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}
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n = fread(buffer, 1, max, f);
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printf("brick: read %d bytes from shader file %s\n", n, filename);
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if (n > 0) {
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buffer[n] = 0;
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LoadAndCompileShader(shader, buffer);
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}
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fclose(f);
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free(buffer);
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}
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static void
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CheckLink(GLuint prog)
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{
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GLint stat;
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glGetProgramiv_func(prog, GL_LINK_STATUS, &stat);
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if (!stat) {
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GLchar log[1000];
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GLsizei len;
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glGetProgramInfoLog_func(prog, 1000, &len, log);
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fprintf(stderr, "Linker error:\n%s\n", log);
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}
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else {
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fprintf(stderr, "Link success!\n");
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}
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}
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static void
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Init(void)
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{
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const char *version;
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GLint i;
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version = (const char *) glGetString(GL_VERSION);
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if (version[0] != '2' || version[1] != '.') {
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printf("Warning: this program expects OpenGL 2.0\n");
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/*exit(1);*/
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}
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GetExtensionFuncs();
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vertShader = glCreateShader_func(GL_VERTEX_SHADER);
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ReadShader(vertShader, VertProgFile);
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fragShader = glCreateShader_func(GL_FRAGMENT_SHADER);
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ReadShader(fragShader, FragProgFile);
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program = glCreateProgram_func();
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glAttachShader_func(program, fragShader);
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glAttachShader_func(program, vertShader);
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glLinkProgram_func(program);
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CheckLink(program);
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glUseProgram_func(program);
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for (i = 0; Uniforms[i].name; i++) {
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Uniforms[i].location
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= glGetUniformLocation_func(program, Uniforms[i].name);
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printf("Uniform %s location: %d\n", Uniforms[i].name,
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Uniforms[i].location);
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switch (Uniforms[i].size) {
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case 1:
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glUniform1fv_func(Uniforms[i].location, 1, Uniforms[i].value);
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break;
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case 2:
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glUniform2fv_func(Uniforms[i].location, 1, Uniforms[i].value);
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break;
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case 3:
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glUniform3fv_func(Uniforms[i].location, 1, Uniforms[i].value);
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break;
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case 4:
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glUniform4fv_func(Uniforms[i].location, 1, Uniforms[i].value);
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break;
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default:
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abort();
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}
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}
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assert(glGetError() == 0);
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glClearColor(0.4f, 0.4f, 0.8f, 0.0f);
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printf("GL_RENDERER = %s\n",(const char *) glGetString(GL_RENDERER));
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assert(glIsProgram_func(program));
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assert(glIsShader_func(fragShader));
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assert(glIsShader_func(vertShader));
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glColor3f(1, 0, 0);
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}
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static void
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ParseOptions(int argc, char *argv[])
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{
|
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int i;
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for (i = 1; i < argc; i++) {
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if (strcmp(argv[i], "-fs") == 0) {
|
||||
FragProgFile = argv[i+1];
|
||||
}
|
||||
else if (strcmp(argv[i], "-vs") == 0) {
|
||||
VertProgFile = argv[i+1];
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
int
|
||||
main(int argc, char *argv[])
|
||||
{
|
||||
glutInit(&argc, argv);
|
||||
glutInitWindowPosition( 0, 0);
|
||||
glutInitWindowSize(400, 400);
|
||||
glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH);
|
||||
win = glutCreateWindow(argv[0]);
|
||||
glutReshapeFunc(Reshape);
|
||||
glutKeyboardFunc(Key);
|
||||
glutSpecialFunc(SpecialKey);
|
||||
glutDisplayFunc(Redisplay);
|
||||
ParseOptions(argc, argv);
|
||||
Init();
|
||||
glutMainLoop();
|
||||
return 0;
|
||||
}
|
||||
|
||||
317
progs/glsl/mandelbrot.c
Normal file
317
progs/glsl/mandelbrot.c
Normal file
|
|
@ -0,0 +1,317 @@
|
|||
/**
|
||||
* "Mandelbrot" shader demo. Uses the example shaders from
|
||||
* chapter 15 (or 18) of the OpenGL Shading Language "orange" book.
|
||||
* 15 Jan 2007
|
||||
*/
|
||||
|
||||
#include <assert.h>
|
||||
#include <string.h>
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
#include <math.h>
|
||||
#include <GL/gl.h>
|
||||
#include <GL/glut.h>
|
||||
#include <GL/glext.h>
|
||||
#include "extfuncs.h"
|
||||
|
||||
|
||||
static char *FragProgFile = "CH18-mandel.frag.txt";
|
||||
static char *VertProgFile = "CH18-mandel.vert.txt";
|
||||
|
||||
/* program/shader objects */
|
||||
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} },
|
||||
{ "SpecularContribution", 1, -1, { 0.5, 0, 0, 0 } },
|
||||
{ "DiffuseContribution", 1, -1, { 0.5, 0, 0, 0 } },
|
||||
{ "Shininess", 1, -1, { 20.0, 0, 0, 0 } },
|
||||
/* frag */
|
||||
{ "MaxIterations", 1, -1, { 12, 0, 0, 0 } },
|
||||
{ "Zoom", 1, -1, { 0.5, 0, 0, 0 } },
|
||||
{ "Xcenter", 1, -1, { -1.0, 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 } }
|
||||
};
|
||||
|
||||
static GLint win = 0;
|
||||
|
||||
|
||||
static GLfloat xRot = 0.0f, yRot = 0.0f, zRot = 0.0f;
|
||||
|
||||
|
||||
|
||||
|
||||
static void
|
||||
Redisplay(void)
|
||||
{
|
||||
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
|
||||
|
||||
glPushMatrix();
|
||||
glRotatef(xRot, 1.0f, 0.0f, 0.0f);
|
||||
glRotatef(yRot, 0.0f, 1.0f, 0.0f);
|
||||
glRotatef(zRot, 0.0f, 0.0f, 1.0f);
|
||||
|
||||
glBegin(GL_POLYGON);
|
||||
glTexCoord2f(0, 0); glVertex2f(-1, -1);
|
||||
glTexCoord2f(1, 0); glVertex2f( 1, -1);
|
||||
glTexCoord2f(1, 1); glVertex2f( 1, 1);
|
||||
glTexCoord2f(0, 1); glVertex2f(-1, 1);
|
||||
glEnd();
|
||||
|
||||
glPopMatrix();
|
||||
|
||||
glutSwapBuffers();
|
||||
}
|
||||
|
||||
|
||||
static void
|
||||
Reshape(int width, int height)
|
||||
{
|
||||
glViewport(0, 0, width, height);
|
||||
glMatrixMode(GL_PROJECTION);
|
||||
glLoadIdentity();
|
||||
glFrustum(-1.0, 1.0, -1.0, 1.0, 5.0, 25.0);
|
||||
glMatrixMode(GL_MODELVIEW);
|
||||
glLoadIdentity();
|
||||
glTranslatef(0.0f, 0.0f, -6.0f);
|
||||
}
|
||||
|
||||
|
||||
static void
|
||||
CleanUp(void)
|
||||
{
|
||||
glDeleteShader_func(fragShader);
|
||||
glDeleteShader_func(vertShader);
|
||||
glDeleteProgram_func(program);
|
||||
glutDestroyWindow(win);
|
||||
}
|
||||
|
||||
|
||||
static void
|
||||
Key(unsigned char key, int x, int y)
|
||||
{
|
||||
(void) x;
|
||||
(void) y;
|
||||
|
||||
switch(key) {
|
||||
case 'z':
|
||||
zRot -= 1.0;
|
||||
break;
|
||||
case 'Z':
|
||||
zRot += 1.0;
|
||||
break;
|
||||
case 27:
|
||||
CleanUp();
|
||||
exit(0);
|
||||
break;
|
||||
}
|
||||
glutPostRedisplay();
|
||||
}
|
||||
|
||||
|
||||
static void
|
||||
SpecialKey(int key, int x, int y)
|
||||
{
|
||||
const GLfloat step = 3.0f;
|
||||
|
||||
(void) x;
|
||||
(void) y;
|
||||
|
||||
switch(key) {
|
||||
case GLUT_KEY_UP:
|
||||
xRot -= step;
|
||||
break;
|
||||
case GLUT_KEY_DOWN:
|
||||
xRot += step;
|
||||
break;
|
||||
case GLUT_KEY_LEFT:
|
||||
yRot -= step;
|
||||
break;
|
||||
case GLUT_KEY_RIGHT:
|
||||
yRot += step;
|
||||
break;
|
||||
}
|
||||
glutPostRedisplay();
|
||||
}
|
||||
|
||||
|
||||
|
||||
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);*/
|
||||
}
|
||||
|
||||
GetExtensionFuncs();
|
||||
|
||||
vertShader = glCreateShader_func(GL_VERTEX_SHADER);
|
||||
ReadShader(vertShader, VertProgFile);
|
||||
|
||||
fragShader = glCreateShader_func(GL_FRAGMENT_SHADER);
|
||||
ReadShader(fragShader, FragProgFile);
|
||||
|
||||
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();
|
||||
}
|
||||
}
|
||||
|
||||
assert(glGetError() == 0);
|
||||
|
||||
glClearColor(0.4f, 0.4f, 0.8f, 0.0f);
|
||||
|
||||
printf("GL_RENDERER = %s\n",(const char *) glGetString(GL_RENDERER));
|
||||
|
||||
assert(glIsProgram_func(program));
|
||||
assert(glIsShader_func(fragShader));
|
||||
assert(glIsShader_func(vertShader));
|
||||
|
||||
glColor3f(1, 0, 0);
|
||||
}
|
||||
|
||||
|
||||
static void
|
||||
ParseOptions(int argc, char *argv[])
|
||||
{
|
||||
int i;
|
||||
for (i = 1; i < argc; i++) {
|
||||
if (strcmp(argv[i], "-fs") == 0) {
|
||||
FragProgFile = argv[i+1];
|
||||
}
|
||||
else if (strcmp(argv[i], "-vs") == 0) {
|
||||
VertProgFile = argv[i+1];
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
int
|
||||
main(int argc, char *argv[])
|
||||
{
|
||||
glutInit(&argc, argv);
|
||||
glutInitWindowPosition( 0, 0);
|
||||
glutInitWindowSize(400, 400);
|
||||
glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH);
|
||||
win = glutCreateWindow(argv[0]);
|
||||
glutReshapeFunc(Reshape);
|
||||
glutKeyboardFunc(Key);
|
||||
glutSpecialFunc(SpecialKey);
|
||||
glutDisplayFunc(Redisplay);
|
||||
ParseOptions(argc, argv);
|
||||
Init();
|
||||
glutMainLoop();
|
||||
return 0;
|
||||
}
|
||||
|
||||
Loading…
Add table
Reference in a new issue