Mesa (master): mesa: set/get new state for GL_EXT_texture_swizzle
Brian Paul
brianp at kemper.freedesktop.org
Wed Jan 28 22:07:14 UTC 2009
Module: Mesa
Branch: master
Commit: 4a89e51c5f88b57040b361b62e80a57c8248ba4b
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=4a89e51c5f88b57040b361b62e80a57c8248ba4b
Author: Brian Paul <brianp at vmware.com>
Date: Wed Jan 28 10:27:33 2009 -0700
mesa: set/get new state for GL_EXT_texture_swizzle
---
src/mesa/main/extensions.c | 1 +
src/mesa/main/mtypes.h | 3 +
src/mesa/main/texobj.c | 9 ++
src/mesa/main/texparam.c | 219 +++++++++++++++++++++++++++++++++++++-------
4 files changed, 198 insertions(+), 34 deletions(-)
diff --git a/src/mesa/main/extensions.c b/src/mesa/main/extensions.c
index 0b4cbec..053f369 100644
--- a/src/mesa/main/extensions.c
+++ b/src/mesa/main/extensions.c
@@ -127,6 +127,7 @@ static const struct {
{ ON, "GL_EXT_texture_object", F(EXT_texture_object) },
{ OFF, "GL_EXT_texture_rectangle", F(NV_texture_rectangle) },
{ OFF, "GL_EXT_texture_sRGB", F(EXT_texture_sRGB) },
+ { OFF, "GL_EXT_texture_swizzle", F(EXT_texture_swizzle) },
{ OFF, "GL_EXT_timer_query", F(EXT_timer_query) },
{ ON, "GL_EXT_vertex_array", F(EXT_vertex_array) },
{ OFF, "GL_EXT_vertex_array_bgra", F(EXT_vertex_array_bgra) },
diff --git a/src/mesa/main/mtypes.h b/src/mesa/main/mtypes.h
index b09c591..8ab0d26 100644
--- a/src/mesa/main/mtypes.h
+++ b/src/mesa/main/mtypes.h
@@ -1446,6 +1446,8 @@ struct gl_texture_object
GLint _MaxLevel; /**< actual max mipmap level (q in the spec) */
GLfloat _MaxLambda; /**< = _MaxLevel - BaseLevel (q - b in spec) */
GLint CropRect[4]; /**< GL_OES_draw_texture */
+ GLenum Swizzle[4]; /**< GL_EXT_texture_swizzle */
+ GLuint _Swizzle; /**< same as Swizzle, but SWIZZLE_* format */
GLboolean GenerateMipmap; /**< GL_SGIS_generate_mipmap */
GLboolean _Complete; /**< Is texture object complete? */
@@ -2621,6 +2623,7 @@ struct gl_extensions
GLboolean EXT_texture_lod_bias;
GLboolean EXT_texture_mirror_clamp;
GLboolean EXT_texture_sRGB;
+ GLboolean EXT_texture_swizzle;
GLboolean EXT_timer_query;
GLboolean EXT_vertex_array;
GLboolean EXT_vertex_array_bgra;
diff --git a/src/mesa/main/texobj.c b/src/mesa/main/texobj.c
index 7848f0b..fad39a0 100644
--- a/src/mesa/main/texobj.c
+++ b/src/mesa/main/texobj.c
@@ -42,6 +42,8 @@
#include "texstate.h"
#include "texobj.h"
#include "mtypes.h"
+#include "shader/prog_instruction.h"
+
/**********************************************************************/
@@ -138,6 +140,11 @@ _mesa_initialize_texture_object( struct gl_texture_object *obj,
obj->CompareFunc = GL_LEQUAL; /* ARB_shadow */
obj->DepthMode = GL_LUMINANCE; /* ARB_depth_texture */
obj->ShadowAmbient = 0.0F; /* ARB/SGIX_shadow_ambient */
+ obj->Swizzle[0] = GL_RED;
+ obj->Swizzle[1] = GL_GREEN;
+ obj->Swizzle[2] = GL_BLUE;
+ obj->Swizzle[3] = GL_ALPHA;
+ obj->_Swizzle = SWIZZLE_NOOP;
}
@@ -252,6 +259,8 @@ _mesa_copy_texture_object( struct gl_texture_object *dest,
dest->GenerateMipmap = src->GenerateMipmap;
dest->Palette = src->Palette;
dest->_Complete = src->_Complete;
+ COPY_4V(dest->Swizzle, src->Swizzle);
+ dest->_Swizzle = src->_Swizzle;
}
diff --git a/src/mesa/main/texparam.c b/src/mesa/main/texparam.c
index 2322d84..695bff0 100644
--- a/src/mesa/main/texparam.c
+++ b/src/mesa/main/texparam.c
@@ -38,6 +38,7 @@
#include "main/texcompress.h"
#include "main/texparam.h"
#include "main/teximage.h"
+#include "shader/prog_instruction.h"
/**
@@ -125,6 +126,45 @@ get_texobj(GLcontext *ctx, GLenum target)
}
+/**
+ * Convert GL_RED/GREEN/BLUE/ALPHA/ZERO/ONE to SWIZZLE_X/Y/Z/W/ZERO/ONE.
+ * \return -1 if error.
+ */
+static GLint
+comp_to_swizzle(GLenum comp)
+{
+ switch (comp) {
+ case GL_RED:
+ return SWIZZLE_X;
+ case GL_GREEN:
+ return SWIZZLE_Y;
+ case GL_BLUE:
+ return SWIZZLE_Z;
+ case GL_ALPHA:
+ return SWIZZLE_W;
+ case GL_ZERO:
+ return SWIZZLE_ZERO;
+ case GL_ONE:
+ return SWIZZLE_ONE;
+ default:
+ return -1;
+ }
+}
+
+
+static void
+set_swizzle_component(GLuint *swizzle, GLuint comp, GLuint swz)
+{
+ ASSERT(comp < 4);
+ ASSERT(swz <= SWIZZLE_NIL);
+ {
+ GLuint mask = 0x7 << (3 * comp);
+ GLuint s = (*swizzle & ~mask) | (swz << (3 * comp));
+ *swizzle = s;
+ }
+}
+
+
/** Set an integer-valued texture parameter */
static void
set_tex_parameteri(GLcontext *ctx,
@@ -318,9 +358,48 @@ set_tex_parameteri(GLcontext *ctx,
texObj->CropRect[1] = params[1];
texObj->CropRect[2] = params[2];
texObj->CropRect[3] = params[3];
- break;
+ return;
#endif
+ case GL_TEXTURE_SWIZZLE_R_EXT:
+ case GL_TEXTURE_SWIZZLE_G_EXT:
+ case GL_TEXTURE_SWIZZLE_B_EXT:
+ case GL_TEXTURE_SWIZZLE_A_EXT:
+ if (ctx->Extensions.EXT_texture_swizzle) {
+ const GLuint comp = pname - GL_TEXTURE_SWIZZLE_R_EXT;
+ const GLint swz = comp_to_swizzle(params[0]);
+ ASSERT(comp < 4);
+ if (swz >= 0) {
+ FLUSH_VERTICES(ctx, _NEW_TEXTURE);
+ texObj->Swizzle[comp] = params[0];
+ set_swizzle_component(&texObj->_Swizzle, comp, swz);
+ return;
+ }
+ }
+ _mesa_error(ctx, GL_INVALID_ENUM, "glTexParameter(pname=0x%x)", pname);
+ return;
+
+ case GL_TEXTURE_SWIZZLE_RGBA_EXT:
+ if (ctx->Extensions.EXT_texture_swizzle) {
+ GLuint comp;
+ FLUSH_VERTICES(ctx, _NEW_TEXTURE);
+ for (comp = 0; comp < 4; comp++) {
+ const GLint swz = comp_to_swizzle(params[comp]);
+ if (swz >= 0) {
+ texObj->Swizzle[comp] = params[comp];
+ set_swizzle_component(&texObj->_Swizzle, comp, swz);
+ }
+ else {
+ _mesa_error(ctx, GL_INVALID_ENUM, "glTexParameter(param=0x%x)",
+ params[comp]);
+ return;
+ }
+ }
+ return;
+ }
+ _mesa_error(ctx, GL_INVALID_ENUM, "glTexParameter(pname=0x%x)", pname);
+ return;
+
default:
_mesa_error(ctx, GL_INVALID_ENUM, "glTexParameter(pname=0x%x)", pname);
}
@@ -974,63 +1053,63 @@ _mesa_GetTexParameterfv( GLenum target, GLenum pname, GLfloat *params )
*params = obj->MaxAnisotropy;
}
else
- error = 1;
+ error = GL_TRUE;
break;
case GL_TEXTURE_COMPARE_SGIX:
if (ctx->Extensions.SGIX_shadow) {
*params = (GLfloat) obj->CompareFlag;
}
else
- error = 1;
+ error = GL_TRUE;
break;
case GL_TEXTURE_COMPARE_OPERATOR_SGIX:
if (ctx->Extensions.SGIX_shadow) {
*params = (GLfloat) obj->CompareOperator;
}
else
- error = 1;
+ error = GL_TRUE;
break;
case GL_SHADOW_AMBIENT_SGIX: /* aka GL_TEXTURE_COMPARE_FAIL_VALUE_ARB */
if (ctx->Extensions.SGIX_shadow_ambient) {
*params = obj->ShadowAmbient;
}
else
- error = 1;
+ error = GL_TRUE;
break;
case GL_GENERATE_MIPMAP_SGIS:
if (ctx->Extensions.SGIS_generate_mipmap) {
*params = (GLfloat) obj->GenerateMipmap;
}
else
- error = 1;
+ error = GL_TRUE;
break;
case GL_TEXTURE_COMPARE_MODE_ARB:
if (ctx->Extensions.ARB_shadow) {
*params = (GLfloat) obj->CompareMode;
}
else
- error = 1;
+ error = GL_TRUE;
break;
case GL_TEXTURE_COMPARE_FUNC_ARB:
if (ctx->Extensions.ARB_shadow) {
*params = (GLfloat) obj->CompareFunc;
}
else
- error = 1;
+ error = GL_TRUE;
break;
case GL_DEPTH_TEXTURE_MODE_ARB:
if (ctx->Extensions.ARB_depth_texture) {
*params = (GLfloat) obj->DepthMode;
}
else
- error = 1;
+ error = GL_TRUE;
break;
case GL_TEXTURE_LOD_BIAS:
if (ctx->Extensions.EXT_texture_lod_bias) {
*params = obj->LodBias;
}
else
- error = 1;
+ error = GL_TRUE;
break;
#ifdef FEATURE_OES_draw_texture
case GL_TEXTURE_CROP_RECT_OES:
@@ -1040,10 +1119,37 @@ _mesa_GetTexParameterfv( GLenum target, GLenum pname, GLfloat *params )
params[3] = obj->CropRect[3];
break;
#endif
+
+ case GL_TEXTURE_SWIZZLE_R_EXT:
+ case GL_TEXTURE_SWIZZLE_G_EXT:
+ case GL_TEXTURE_SWIZZLE_B_EXT:
+ case GL_TEXTURE_SWIZZLE_A_EXT:
+ if (ctx->Extensions.EXT_texture_swizzle) {
+ GLuint comp = pname - GL_TEXTURE_SWIZZLE_R_EXT;
+ *params = (GLfloat) obj->Swizzle[comp];
+ }
+ else {
+ error = GL_TRUE;
+ }
+ break;
+
+ case GL_TEXTURE_SWIZZLE_RGBA_EXT:
+ if (ctx->Extensions.EXT_texture_swizzle) {
+ GLuint comp;
+ for (comp = 0; comp < 4; comp++) {
+ params[comp] = (GLfloat) obj->Swizzle[comp];
+ }
+ }
+ else {
+ error = GL_TRUE;
+ }
+ break;
+
default:
- error = 1;
+ error = GL_TRUE;
break;
}
+
if (error)
_mesa_error(ctx, GL_INVALID_ENUM, "glGetTexParameterfv(pname=0x%x)",
pname);
@@ -1057,6 +1163,7 @@ _mesa_GetTexParameteriv( GLenum target, GLenum pname, GLint *params )
{
struct gl_texture_unit *texUnit;
struct gl_texture_object *obj;
+ GLboolean error = GL_FALSE;
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END(ctx);
@@ -1077,19 +1184,19 @@ _mesa_GetTexParameteriv( GLenum target, GLenum pname, GLint *params )
switch (pname) {
case GL_TEXTURE_MAG_FILTER:
*params = (GLint) obj->MagFilter;
- return;
+ break;;
case GL_TEXTURE_MIN_FILTER:
*params = (GLint) obj->MinFilter;
- return;
+ break;;
case GL_TEXTURE_WRAP_S:
*params = (GLint) obj->WrapS;
- return;
+ break;;
case GL_TEXTURE_WRAP_T:
*params = (GLint) obj->WrapT;
- return;
+ break;;
case GL_TEXTURE_WRAP_R:
*params = (GLint) obj->WrapR;
- return;
+ break;;
case GL_TEXTURE_BORDER_COLOR:
{
GLfloat b[4];
@@ -1102,7 +1209,7 @@ _mesa_GetTexParameteriv( GLenum target, GLenum pname, GLint *params )
params[2] = FLOAT_TO_INT(b[2]);
params[3] = FLOAT_TO_INT(b[3]);
}
- return;
+ break;;
case GL_TEXTURE_RESIDENT:
{
GLboolean resident;
@@ -1112,74 +1219,92 @@ _mesa_GetTexParameteriv( GLenum target, GLenum pname, GLint *params )
resident = GL_TRUE;
*params = (GLint) resident;
}
- return;
+ break;;
case GL_TEXTURE_PRIORITY:
*params = FLOAT_TO_INT(obj->Priority);
- return;
+ break;;
case GL_TEXTURE_MIN_LOD:
*params = (GLint) obj->MinLod;
- return;
+ break;;
case GL_TEXTURE_MAX_LOD:
*params = (GLint) obj->MaxLod;
- return;
+ break;;
case GL_TEXTURE_BASE_LEVEL:
*params = obj->BaseLevel;
- return;
+ break;;
case GL_TEXTURE_MAX_LEVEL:
*params = obj->MaxLevel;
- return;
+ break;;
case GL_TEXTURE_MAX_ANISOTROPY_EXT:
if (ctx->Extensions.EXT_texture_filter_anisotropic) {
*params = (GLint) obj->MaxAnisotropy;
- return;
+ }
+ else {
+ error = GL_TRUE;
}
break;
case GL_TEXTURE_COMPARE_SGIX:
if (ctx->Extensions.SGIX_shadow) {
*params = (GLint) obj->CompareFlag;
- return;
+ }
+ else {
+ error = GL_TRUE;
}
break;
case GL_TEXTURE_COMPARE_OPERATOR_SGIX:
if (ctx->Extensions.SGIX_shadow) {
*params = (GLint) obj->CompareOperator;
- return;
+ }
+ else {
+ error = GL_TRUE;
}
break;
case GL_SHADOW_AMBIENT_SGIX: /* aka GL_TEXTURE_COMPARE_FAIL_VALUE_ARB */
if (ctx->Extensions.SGIX_shadow_ambient) {
*params = (GLint) FLOAT_TO_INT(obj->ShadowAmbient);
- return;
+ }
+ else {
+ error = GL_TRUE;
}
break;
case GL_GENERATE_MIPMAP_SGIS:
if (ctx->Extensions.SGIS_generate_mipmap) {
*params = (GLint) obj->GenerateMipmap;
- return;
+ }
+ else {
+ error = GL_TRUE;
}
break;
case GL_TEXTURE_COMPARE_MODE_ARB:
if (ctx->Extensions.ARB_shadow) {
*params = (GLint) obj->CompareMode;
- return;
+ }
+ else {
+ error = GL_TRUE;
}
break;
case GL_TEXTURE_COMPARE_FUNC_ARB:
if (ctx->Extensions.ARB_shadow) {
*params = (GLint) obj->CompareFunc;
- return;
+ }
+ else {
+ error = GL_TRUE;
}
break;
case GL_DEPTH_TEXTURE_MODE_ARB:
if (ctx->Extensions.ARB_depth_texture) {
*params = (GLint) obj->DepthMode;
- return;
+ }
+ else {
+ error = GL_TRUE;
}
break;
case GL_TEXTURE_LOD_BIAS:
if (ctx->Extensions.EXT_texture_lod_bias) {
*params = (GLint) obj->LodBias;
- return;
+ }
+ else {
+ error = GL_TRUE;
}
break;
#ifdef FEATURE_OES_draw_texture
@@ -1190,9 +1315,35 @@ _mesa_GetTexParameteriv( GLenum target, GLenum pname, GLint *params )
params[3] = obj->CropRect[3];
break;
#endif
+ case GL_TEXTURE_SWIZZLE_R_EXT:
+ case GL_TEXTURE_SWIZZLE_G_EXT:
+ case GL_TEXTURE_SWIZZLE_B_EXT:
+ case GL_TEXTURE_SWIZZLE_A_EXT:
+ if (ctx->Extensions.EXT_texture_swizzle) {
+ GLuint comp = pname - GL_TEXTURE_SWIZZLE_R_EXT;
+ *params = obj->Swizzle[comp];
+ }
+ else {
+ error = GL_TRUE;
+ }
+ break;
+
+ case GL_TEXTURE_SWIZZLE_RGBA_EXT:
+ if (ctx->Extensions.EXT_texture_swizzle) {
+ COPY_4V(params, obj->Swizzle);
+ }
+ else {
+ error = GL_TRUE;
+ }
+ break;
+
default:
; /* silence warnings */
}
- /* If we get here, pname was an unrecognized enum */
- _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexParameteriv(pname=0x%x)", pname);
+
+ if (error)
+ _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexParameteriv(pname=0x%x)",
+ pname);
+
+ _mesa_unlock_texture(ctx, obj);
}
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