diff options
author | Zack Rusin <[email protected]> | 2008-06-12 00:04:30 -0400 |
---|---|---|
committer | Zack Rusin <[email protected]> | 2008-06-12 14:15:37 -0400 |
commit | f49dd47dc936587cd9eabddfe370651efc612f9f (patch) | |
tree | 62e80e914a1b3d164d5f87878c6c5dad7f1d12c5 /progs/vpglsl | |
parent | 38fdf130d4016197e9ecfa6beeade0362f9622eb (diff) |
add some glsl example testing different arrays of uniforms
Diffstat (limited to 'progs/vpglsl')
-rw-r--r-- | progs/vpglsl/off2f.glsl | 18 | ||||
-rw-r--r-- | progs/vpglsl/varfor1f.glsl | 22 | ||||
-rw-r--r-- | progs/vpglsl/varfor2f.glsl | 24 | ||||
-rw-r--r-- | progs/vpglsl/varfor4f.glsl | 19 | ||||
-rw-r--r-- | progs/vpglsl/vp-tris.c | 48 |
5 files changed, 131 insertions, 0 deletions
diff --git a/progs/vpglsl/off2f.glsl b/progs/vpglsl/off2f.glsl new file mode 100644 index 00000000000..e06cb42a0ed --- /dev/null +++ b/progs/vpglsl/off2f.glsl @@ -0,0 +1,18 @@ +const int KernelSize = 8; +uniform vec2 Offset2f[KernelSize]; +uniform vec4 KernelValue4f[KernelSize]; + +void main(void) +{ + int i; + vec4 sum = vec4(0.0); + vec4 tmp = gl_Color; + vec2 rg, ba; + gl_Position = gl_Vertex; + + rg = Offset2f[4]; + ba = Offset2f[5]; + + + gl_FrontColor = KernelValue4f[0] * vec4(rg, ba); +} diff --git a/progs/vpglsl/varfor1f.glsl b/progs/vpglsl/varfor1f.glsl new file mode 100644 index 00000000000..9c3e8f2a238 --- /dev/null +++ b/progs/vpglsl/varfor1f.glsl @@ -0,0 +1,22 @@ +const int KernelSize = 16; +uniform float KernelValue1f[KernelSize]; + +void main(void) +{ + int i; + vec4 sum = vec4(0.0); + vec4 tmp = gl_Color; + gl_Position = gl_Vertex; + + for (i = 0; i < KernelSize; ++i) { + float x, y, z, w; + + x = KernelValue1f[i]; ++i; + y = KernelValue1f[i]; ++i; + z = KernelValue1f[i]; ++i; + w = KernelValue1f[i]; + + sum += tmp * vec4(x, y, z, w); + } + gl_FrontColor = sum; +} diff --git a/progs/vpglsl/varfor2f.glsl b/progs/vpglsl/varfor2f.glsl new file mode 100644 index 00000000000..d98a1100458 --- /dev/null +++ b/progs/vpglsl/varfor2f.glsl @@ -0,0 +1,24 @@ +const int KernelSize = 9; +uniform vec2 KernelValue2f[KernelSize]; + +void main(void) +{ + int i; + vec4 sum = vec4(0.0); + vec4 tmp = gl_Color; + gl_Position = gl_Vertex; + + for (i = 0; i < KernelSize; ++i) { + vec2 rg, ba; + + rg = KernelValue2f[i]; + ++i; + if (i < KernelSize) + ba = KernelValue2f[i]; + else + ba = vec2(0, 0); + + sum += tmp * vec4(rg, ba); + } + gl_FrontColor = sum; +} diff --git a/progs/vpglsl/varfor4f.glsl b/progs/vpglsl/varfor4f.glsl new file mode 100644 index 00000000000..c70ba0356fd --- /dev/null +++ b/progs/vpglsl/varfor4f.glsl @@ -0,0 +1,19 @@ +const int KernelSize = 4; +uniform vec4 KernelValue4f[KernelSize]; + +void main(void) +{ + int i; + vec4 sum = vec4(0.0); + vec4 tmp = gl_Color; + gl_Position = gl_Vertex; + + for (i = 0; i < KernelSize; ++i) { + vec4 rgba; + + rgba = KernelValue4f[i]; + + sum += tmp * rgba; + } + gl_FrontColor = sum; +} diff --git a/progs/vpglsl/vp-tris.c b/progs/vpglsl/vp-tris.c index 3c2830773a3..9108d3f1978 100644 --- a/progs/vpglsl/vp-tris.c +++ b/progs/vpglsl/vp-tris.c @@ -76,6 +76,52 @@ static void check_link(GLuint prog) } } +static void setup_uniforms() +{ + { + GLuint loc1f = glGetUniformLocationARB(program, "Offset1f"); + GLuint loc2f = glGetUniformLocationARB(program, "Offset2f"); + GLuint loc4f = glGetUniformLocationARB(program, "Offset4f"); + GLfloat vecKer[] = + { 1.0, 0.0, 0.0, 1.0, + 0.0, 1.0, 0.0, 1.0, + 1.0, 0.0, 0.0, 1.0, + 0.0, 0.0, 0.0, 1.0 + }; + if (loc1f >= 0) + glUniform1fv(loc1f, 16, vecKer); + + if (loc2f >= 0) + glUniform2fv(loc2f, 8, vecKer); + + if (loc4f >= 0) + glUniform4fv(loc4f, 4, vecKer); + + } + + GLuint loc1f = glGetUniformLocationARB(program, "KernelValue1f"); + GLuint loc2f = glGetUniformLocationARB(program, "KernelValue2f"); + GLuint loc4f = glGetUniformLocationARB(program, "KernelValue4f"); + GLfloat vecKer[] = + { 1.0, 0.0, 0.0, 0.25, + 0.0, 1.0, 0.0, 0.25, + 0.0, 0.0, 1.0, 0.25, + 0.0, 0.0, 0.0, 0.25, + 0.5, 0.0, 0.0, 0.35, + 0.0, 0.5, 0.0, 0.35, + 0.0, 0.0, 0.5, 0.35, + 0.0, 0.0, 0.0, 0.35 + }; + if (loc1f >= 0) + glUniform1fv(loc1f, 16, vecKer); + + if (loc2f >= 0) + glUniform2fv(loc2f, 8, vecKer); + + if (loc4f >= 0) + glUniform4fv(loc4f, 4, vecKer); +} + static void prepare_shaders() { static const char *fragShaderText = @@ -103,6 +149,8 @@ static void prepare_shaders() glLinkProgram(program); check_link(program); glUseProgram(program); + + setup_uniforms(); } static void args(int argc, char *argv[]) |