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authorKeith Whitwell <[email protected]>2000-10-30 13:31:59 +0000
committerKeith Whitwell <[email protected]>2000-10-30 13:31:59 +0000
commita96308c37db0bc0086a017d318bc3504aa5f0b1a (patch)
tree0010de3aa19901acf13b57e57e7ba465abffa95e /src/mesa/main/texstate.c
parenta4575499679d9d91055a35c7673b81872ec127cb (diff)
Replace the flags Mesa was using for ctx->NewState with a new set
based on the GL attribute groups. Introduced constants describing the circumstances under which some key derived values can change: _SWRAST_NEW_RASTERMASK -- ctx->RasterMask _SWRAST_NEW_TRIANGLE -- The software rasterizer's triangle function _DD_NEW_FEEDBACK -- the 'DD_FEEDBACK' bit in ctx->TriangleCaps These are helpful in deciding whether you need to recalculate state if your recalculation involves reference to a derived value.
Diffstat (limited to 'src/mesa/main/texstate.c')
-rw-r--r--src/mesa/main/texstate.c100
1 files changed, 40 insertions, 60 deletions
diff --git a/src/mesa/main/texstate.c b/src/mesa/main/texstate.c
index 309b54fe80d..61dd4a20168 100644
--- a/src/mesa/main/texstate.c
+++ b/src/mesa/main/texstate.c
@@ -1,4 +1,4 @@
-/* $Id: texstate.c,v 1.18 2000/10/28 20:41:14 brianp Exp $ */
+/* $Id: texstate.c,v 1.19 2000/10/30 13:32:01 keithw Exp $ */
/*
* Mesa 3-D graphics library
@@ -84,19 +84,18 @@ _mesa_TexEnvfv( GLenum target, GLenum pname, const GLfloat *param )
case GL_ADD:
case GL_COMBINE_EXT:
if (mode == GL_ADD &&
- !ctx->Extensions.HaveTextureEnvAdd) {
+ !ctx->Extensions.EXT_texture_env_add) {
gl_error(ctx, GL_INVALID_ENUM, "glTexEnv(param)");
return;
}
if (mode == GL_COMBINE_EXT &&
- !ctx->Extensions.HaveTextureEnvCombine) {
+ !ctx->Extensions.EXT_texture_env_combine) {
gl_error(ctx, GL_INVALID_ENUM, "glTexEnv(param)");
return;
}
if (texUnit->EnvMode == mode)
return; /* no change */
texUnit->EnvMode = mode;
- ctx->NewState |= NEW_TEXTURE_ENV;
break;
default:
gl_error( ctx, GL_INVALID_VALUE, "glTexEnv(param)" );
@@ -111,7 +110,7 @@ _mesa_TexEnvfv( GLenum target, GLenum pname, const GLfloat *param )
texUnit->EnvColor[3] = CLAMP( param[3], 0.0F, 1.0F );
break;
case GL_COMBINE_RGB_EXT:
- if (ctx->Extensions.HaveTextureEnvCombine) {
+ if (ctx->Extensions.EXT_texture_env_combine) {
GLenum mode = (GLenum) (GLint) *param;
switch (mode) {
case GL_REPLACE:
@@ -122,7 +121,6 @@ _mesa_TexEnvfv( GLenum target, GLenum pname, const GLfloat *param )
if (texUnit->CombineModeRGB == mode)
return; /* no change */
texUnit->CombineModeRGB = mode;
- ctx->NewState |= NEW_TEXTURE_ENV;
break;
default:
gl_error( ctx, GL_INVALID_ENUM, "glTexEnv(param)" );
@@ -135,7 +133,7 @@ _mesa_TexEnvfv( GLenum target, GLenum pname, const GLfloat *param )
}
break;
case GL_COMBINE_ALPHA_EXT:
- if (ctx->Extensions.HaveTextureEnvCombine) {
+ if (ctx->Extensions.EXT_texture_env_combine) {
GLenum mode = (GLenum) (GLint) *param;
switch (mode) {
case GL_REPLACE:
@@ -146,7 +144,6 @@ _mesa_TexEnvfv( GLenum target, GLenum pname, const GLfloat *param )
if (texUnit->CombineModeA == mode)
return; /* no change */
texUnit->CombineModeA = mode;
- ctx->NewState |= NEW_TEXTURE_ENV;
break;
default:
gl_error( ctx, GL_INVALID_ENUM, "glTexEnv(param)" );
@@ -161,7 +158,7 @@ _mesa_TexEnvfv( GLenum target, GLenum pname, const GLfloat *param )
case GL_SOURCE0_RGB_EXT:
case GL_SOURCE1_RGB_EXT:
case GL_SOURCE2_RGB_EXT:
- if (ctx->Extensions.HaveTextureEnvCombine) {
+ if (ctx->Extensions.EXT_texture_env_combine) {
GLenum source = (GLenum) (GLint) *param;
GLuint s = pname - GL_SOURCE0_RGB_EXT;
switch (source) {
@@ -172,7 +169,6 @@ _mesa_TexEnvfv( GLenum target, GLenum pname, const GLfloat *param )
if (texUnit->CombineSourceRGB[s] == source)
return; /* no change */
texUnit->CombineSourceRGB[s] = source;
- ctx->NewState |= NEW_TEXTURE_ENV;
break;
default:
gl_error( ctx, GL_INVALID_ENUM, "glTexEnv(param)" );
@@ -187,7 +183,7 @@ _mesa_TexEnvfv( GLenum target, GLenum pname, const GLfloat *param )
case GL_SOURCE0_ALPHA_EXT:
case GL_SOURCE1_ALPHA_EXT:
case GL_SOURCE2_ALPHA_EXT:
- if (ctx->Extensions.HaveTextureEnvCombine) {
+ if (ctx->Extensions.EXT_texture_env_combine) {
GLenum source = (GLenum) (GLint) *param;
GLuint s = pname - GL_SOURCE0_ALPHA_EXT;
switch (source) {
@@ -197,7 +193,6 @@ _mesa_TexEnvfv( GLenum target, GLenum pname, const GLfloat *param )
case GL_PREVIOUS_EXT:
if (texUnit->CombineSourceA[s] == source) return;
texUnit->CombineSourceA[s] = source;
- ctx->NewState |= NEW_TEXTURE_ENV;
break;
default:
gl_error( ctx, GL_INVALID_ENUM, "glTexEnv(param)" );
@@ -211,7 +206,7 @@ _mesa_TexEnvfv( GLenum target, GLenum pname, const GLfloat *param )
break;
case GL_OPERAND0_RGB_EXT:
case GL_OPERAND1_RGB_EXT:
- if (ctx->Extensions.HaveTextureEnvCombine) {
+ if (ctx->Extensions.EXT_texture_env_combine) {
GLenum operand = (GLenum) (GLint) *param;
GLuint s = pname - GL_OPERAND0_RGB_EXT;
switch (operand) {
@@ -220,7 +215,6 @@ _mesa_TexEnvfv( GLenum target, GLenum pname, const GLfloat *param )
case GL_SRC_ALPHA:
case GL_ONE_MINUS_SRC_ALPHA:
texUnit->CombineOperandRGB[s] = operand;
- ctx->NewState |= NEW_TEXTURE_ENV;
break;
default:
gl_error( ctx, GL_INVALID_ENUM, "glTexEnv(param)" );
@@ -234,14 +228,13 @@ _mesa_TexEnvfv( GLenum target, GLenum pname, const GLfloat *param )
break;
case GL_OPERAND0_ALPHA_EXT:
case GL_OPERAND1_ALPHA_EXT:
- if (ctx->Extensions.HaveTextureEnvCombine) {
+ if (ctx->Extensions.EXT_texture_env_combine) {
GLenum operand = (GLenum) (GLint) *param;
switch (operand) {
case GL_SRC_ALPHA:
case GL_ONE_MINUS_SRC_ALPHA:
texUnit->CombineOperandA[pname-GL_OPERAND0_ALPHA_EXT]
= operand;
- ctx->NewState |= NEW_TEXTURE_ENV;
break;
default:
gl_error( ctx, GL_INVALID_ENUM, "glTexEnv(param)" );
@@ -254,10 +247,9 @@ _mesa_TexEnvfv( GLenum target, GLenum pname, const GLfloat *param )
}
break;
case GL_OPERAND2_RGB_EXT:
- if (ctx->Extensions.HaveTextureEnvCombine) {
+ if (ctx->Extensions.EXT_texture_env_combine) {
if ((GLenum) (GLint) *param == GL_SRC_ALPHA) {
texUnit->CombineOperandRGB[2] = (GLenum) (GLint) *param;
- ctx->NewState |= NEW_TEXTURE_ENV;
}
else {
gl_error( ctx, GL_INVALID_ENUM, "glTexEnv(param)" );
@@ -270,10 +262,9 @@ _mesa_TexEnvfv( GLenum target, GLenum pname, const GLfloat *param )
}
break;
case GL_OPERAND2_ALPHA_EXT:
- if (ctx->Extensions.HaveTextureEnvCombine) {
+ if (ctx->Extensions.EXT_texture_env_combine) {
if ((GLenum) (GLint) *param == GL_SRC_ALPHA) {
texUnit->CombineOperandA[2] = (GLenum) (GLint) *param;
- ctx->NewState |= NEW_TEXTURE_ENV;
}
else {
gl_error( ctx, GL_INVALID_ENUM, "glTexEnv(param)" );
@@ -286,18 +277,15 @@ _mesa_TexEnvfv( GLenum target, GLenum pname, const GLfloat *param )
}
break;
case GL_RGB_SCALE_EXT:
- if (ctx->Extensions.HaveTextureEnvCombine) {
+ if (ctx->Extensions.EXT_texture_env_combine) {
if (*param == 1.0) {
texUnit->CombineScaleShiftRGB = 0;
- ctx->NewState |= NEW_TEXTURE_ENV;
}
else if (*param == 2.0) {
texUnit->CombineScaleShiftRGB = 1;
- ctx->NewState |= NEW_TEXTURE_ENV;
}
else if (*param == 4.0) {
texUnit->CombineScaleShiftRGB = 2;
- ctx->NewState |= NEW_TEXTURE_ENV;
}
else {
gl_error( ctx, GL_INVALID_VALUE, "glTexEnv(param)" );
@@ -310,18 +298,15 @@ _mesa_TexEnvfv( GLenum target, GLenum pname, const GLfloat *param )
}
break;
case GL_ALPHA_SCALE:
- if (ctx->Extensions.HaveTextureEnvCombine) {
+ if (ctx->Extensions.EXT_texture_env_combine) {
if (*param == 1.0) {
texUnit->CombineScaleShiftA = 0;
- ctx->NewState |= NEW_TEXTURE_ENV;
}
else if (*param == 2.0) {
texUnit->CombineScaleShiftA = 1;
- ctx->NewState |= NEW_TEXTURE_ENV;
}
else if (*param == 4.0) {
texUnit->CombineScaleShiftA = 2;
- ctx->NewState |= NEW_TEXTURE_ENV;
}
else {
gl_error( ctx, GL_INVALID_VALUE, "glTexEnv(param)" );
@@ -339,7 +324,7 @@ _mesa_TexEnvfv( GLenum target, GLenum pname, const GLfloat *param )
}
}
else if (target==GL_TEXTURE_FILTER_CONTROL_EXT) {
- if (!ctx->Extensions.HaveTextureLodBias) {
+ if (!ctx->Extensions.EXT_texture_lod_bias) {
gl_error( ctx, GL_INVALID_ENUM, "glTexEnv(param)" );
return;
}
@@ -368,6 +353,7 @@ _mesa_TexEnvfv( GLenum target, GLenum pname, const GLfloat *param )
(*ctx->Driver.TexEnv)( ctx, target, pname, param );
}
+ ctx->NewState |= _NEW_TEXTURE;
}
@@ -422,7 +408,7 @@ _mesa_GetTexEnvfv( GLenum target, GLenum pname, GLfloat *params )
COPY_4FV( params, texUnit->EnvColor );
break;
case GL_RGB_SCALE_EXT:
- if (ctx->Extensions.HaveTextureEnvCombine) {
+ if (ctx->Extensions.EXT_texture_env_combine) {
if (texUnit->CombineScaleShiftRGB == 0)
*params = 1.0;
else if (texUnit->CombineScaleShiftRGB == 1)
@@ -436,7 +422,7 @@ _mesa_GetTexEnvfv( GLenum target, GLenum pname, GLfloat *params )
}
break;
case GL_ALPHA_SCALE:
- if (ctx->Extensions.HaveTextureEnvCombine) {
+ if (ctx->Extensions.EXT_texture_env_combine) {
if (texUnit->CombineScaleShiftA == 0)
*params = 1.0;
else if (texUnit->CombineScaleShiftA == 1)
@@ -479,7 +465,7 @@ _mesa_GetTexEnviv( GLenum target, GLenum pname, GLint *params )
params[3] = FLOAT_TO_INT( texUnit->EnvColor[3] );
break;
case GL_COMBINE_RGB_EXT:
- if (ctx->Extensions.HaveTextureEnvCombine) {
+ if (ctx->Extensions.EXT_texture_env_combine) {
*params = (GLint) texUnit->CombineModeRGB;
}
else {
@@ -487,7 +473,7 @@ _mesa_GetTexEnviv( GLenum target, GLenum pname, GLint *params )
}
break;
case GL_COMBINE_ALPHA_EXT:
- if (ctx->Extensions.HaveTextureEnvCombine) {
+ if (ctx->Extensions.EXT_texture_env_combine) {
*params = (GLint) texUnit->CombineModeA;
}
else {
@@ -495,7 +481,7 @@ _mesa_GetTexEnviv( GLenum target, GLenum pname, GLint *params )
}
break;
case GL_SOURCE0_RGB_EXT:
- if (ctx->Extensions.HaveTextureEnvCombine) {
+ if (ctx->Extensions.EXT_texture_env_combine) {
*params = (GLint) texUnit->CombineSourceRGB[0];
}
else {
@@ -503,7 +489,7 @@ _mesa_GetTexEnviv( GLenum target, GLenum pname, GLint *params )
}
break;
case GL_SOURCE1_RGB_EXT:
- if (ctx->Extensions.HaveTextureEnvCombine) {
+ if (ctx->Extensions.EXT_texture_env_combine) {
*params = (GLint) texUnit->CombineSourceRGB[1];
}
else {
@@ -511,7 +497,7 @@ _mesa_GetTexEnviv( GLenum target, GLenum pname, GLint *params )
}
break;
case GL_SOURCE2_RGB_EXT:
- if (ctx->Extensions.HaveTextureEnvCombine) {
+ if (ctx->Extensions.EXT_texture_env_combine) {
*params = (GLint) texUnit->CombineSourceRGB[2];
}
else {
@@ -519,7 +505,7 @@ _mesa_GetTexEnviv( GLenum target, GLenum pname, GLint *params )
}
break;
case GL_SOURCE0_ALPHA_EXT:
- if (ctx->Extensions.HaveTextureEnvCombine) {
+ if (ctx->Extensions.EXT_texture_env_combine) {
*params = (GLint) texUnit->CombineSourceA[0];
}
else {
@@ -527,7 +513,7 @@ _mesa_GetTexEnviv( GLenum target, GLenum pname, GLint *params )
}
break;
case GL_SOURCE1_ALPHA_EXT:
- if (ctx->Extensions.HaveTextureEnvCombine) {
+ if (ctx->Extensions.EXT_texture_env_combine) {
*params = (GLint) texUnit->CombineSourceA[1];
}
else {
@@ -535,7 +521,7 @@ _mesa_GetTexEnviv( GLenum target, GLenum pname, GLint *params )
}
break;
case GL_SOURCE2_ALPHA_EXT:
- if (ctx->Extensions.HaveTextureEnvCombine) {
+ if (ctx->Extensions.EXT_texture_env_combine) {
*params = (GLint) texUnit->CombineSourceA[2];
}
else {
@@ -543,7 +529,7 @@ _mesa_GetTexEnviv( GLenum target, GLenum pname, GLint *params )
}
break;
case GL_OPERAND0_RGB_EXT:
- if (ctx->Extensions.HaveTextureEnvCombine) {
+ if (ctx->Extensions.EXT_texture_env_combine) {
*params = (GLint) texUnit->CombineOperandRGB[0];
}
else {
@@ -551,7 +537,7 @@ _mesa_GetTexEnviv( GLenum target, GLenum pname, GLint *params )
}
break;
case GL_OPERAND1_RGB_EXT:
- if (ctx->Extensions.HaveTextureEnvCombine) {
+ if (ctx->Extensions.EXT_texture_env_combine) {
*params = (GLint) texUnit->CombineOperandRGB[1];
}
else {
@@ -559,7 +545,7 @@ _mesa_GetTexEnviv( GLenum target, GLenum pname, GLint *params )
}
break;
case GL_OPERAND2_RGB_EXT:
- if (ctx->Extensions.HaveTextureEnvCombine) {
+ if (ctx->Extensions.EXT_texture_env_combine) {
*params = (GLint) texUnit->CombineOperandRGB[2];
}
else {
@@ -567,7 +553,7 @@ _mesa_GetTexEnviv( GLenum target, GLenum pname, GLint *params )
}
break;
case GL_OPERAND0_ALPHA_EXT:
- if (ctx->Extensions.HaveTextureEnvCombine) {
+ if (ctx->Extensions.EXT_texture_env_combine) {
*params = (GLint) texUnit->CombineOperandA[0];
}
else {
@@ -575,7 +561,7 @@ _mesa_GetTexEnviv( GLenum target, GLenum pname, GLint *params )
}
break;
case GL_OPERAND1_ALPHA_EXT:
- if (ctx->Extensions.HaveTextureEnvCombine) {
+ if (ctx->Extensions.EXT_texture_env_combine) {
*params = (GLint) texUnit->CombineOperandA[1];
}
else {
@@ -583,7 +569,7 @@ _mesa_GetTexEnviv( GLenum target, GLenum pname, GLint *params )
}
break;
case GL_OPERAND2_ALPHA_EXT:
- if (ctx->Extensions.HaveTextureEnvCombine) {
+ if (ctx->Extensions.EXT_texture_env_combine) {
*params = (GLint) texUnit->CombineOperandA[2];
}
else {
@@ -638,7 +624,7 @@ _mesa_TexParameterfv( GLenum target, GLenum pname, const GLfloat *params )
texObj = texUnit->CurrentD[3];
break;
case GL_TEXTURE_CUBE_MAP_ARB:
- if (ctx->Extensions.HaveTextureCubeMap) {
+ if (ctx->Extensions.ARB_texture_cube_map) {
texObj = texUnit->CurrentCubeMap;
break;
}
@@ -660,7 +646,6 @@ _mesa_TexParameterfv( GLenum target, GLenum pname, const GLfloat *params )
|| eparam==GL_NEAREST_MIPMAP_LINEAR
|| eparam==GL_LINEAR_MIPMAP_LINEAR) {
texObj->MinFilter = eparam;
- ctx->NewState |= NEW_TEXTURING;
}
else {
gl_error( ctx, GL_INVALID_VALUE, "glTexParameter(param)" );
@@ -674,7 +659,6 @@ _mesa_TexParameterfv( GLenum target, GLenum pname, const GLfloat *params )
if (eparam==GL_NEAREST || eparam==GL_LINEAR) {
texObj->MagFilter = eparam;
- ctx->NewState |= NEW_TEXTURING;
}
else {
gl_error( ctx, GL_INVALID_VALUE, "glTexParameter(param)" );
@@ -687,7 +671,6 @@ _mesa_TexParameterfv( GLenum target, GLenum pname, const GLfloat *params )
if (eparam==GL_CLAMP || eparam==GL_REPEAT || eparam==GL_CLAMP_TO_EDGE) {
texObj->WrapS = eparam;
- ctx->NewState |= NEW_TEXTURING;
}
else {
gl_error( ctx, GL_INVALID_VALUE, "glTexParameter(param)" );
@@ -700,7 +683,6 @@ _mesa_TexParameterfv( GLenum target, GLenum pname, const GLfloat *params )
if (eparam==GL_CLAMP || eparam==GL_REPEAT || eparam==GL_CLAMP_TO_EDGE) {
texObj->WrapT = eparam;
- ctx->NewState |= NEW_TEXTURING;
}
else {
gl_error( ctx, GL_INVALID_VALUE, "glTexParameter(param)" );
@@ -713,7 +695,6 @@ _mesa_TexParameterfv( GLenum target, GLenum pname, const GLfloat *params )
if (eparam==GL_CLAMP || eparam==GL_REPEAT || eparam==GL_CLAMP_TO_EDGE) {
texObj->WrapR = eparam;
- ctx->NewState |= NEW_TEXTURING;
}
else {
gl_error( ctx, GL_INVALID_VALUE, "glTexParameter(param)" );
@@ -727,11 +708,9 @@ _mesa_TexParameterfv( GLenum target, GLenum pname, const GLfloat *params )
break;
case GL_TEXTURE_MIN_LOD:
texObj->MinLod = params[0];
- ctx->NewState |= NEW_TEXTURING;
break;
case GL_TEXTURE_MAX_LOD:
texObj->MaxLod = params[0];
- ctx->NewState |= NEW_TEXTURING;
break;
case GL_TEXTURE_BASE_LEVEL:
if (params[0] < 0.0) {
@@ -739,7 +718,6 @@ _mesa_TexParameterfv( GLenum target, GLenum pname, const GLfloat *params )
return;
}
texObj->BaseLevel = (GLint) params[0];
- ctx->NewState |= NEW_TEXTURING;
break;
case GL_TEXTURE_MAX_LEVEL:
if (params[0] < 0.0) {
@@ -747,7 +725,6 @@ _mesa_TexParameterfv( GLenum target, GLenum pname, const GLfloat *params )
return;
}
texObj->MaxLevel = (GLint) params[0];
- ctx->NewState |= NEW_TEXTURING;
break;
case GL_TEXTURE_PRIORITY:
@@ -758,6 +735,7 @@ _mesa_TexParameterfv( GLenum target, GLenum pname, const GLfloat *params )
return;
}
+ ctx->NewState |= _NEW_TEXTURE;
gl_put_texobj_on_dirty_list( ctx, texObj );
if (ctx->Driver.TexParameter) {
@@ -810,7 +788,7 @@ tex_image_dimensions(GLcontext *ctx, GLenum target)
return 3;
case GL_TEXTURE_CUBE_MAP_ARB:
case GL_PROXY_TEXTURE_CUBE_MAP_ARB:
- return ctx->Extensions.HaveTextureCubeMap ? 2 : 0;
+ return ctx->Extensions.ARB_texture_cube_map ? 2 : 0;
default:
gl_problem(ctx, "bad target in _mesa_tex_target_dimensions()");
return 0;
@@ -907,7 +885,7 @@ _mesa_GetTexLevelParameteriv( GLenum target, GLint level,
/* GL_ARB_texture_compression */
case GL_TEXTURE_COMPRESSED_IMAGE_SIZE_ARB:
- if (ctx->Extensions.HaveTextureCompression) {
+ if (ctx->Extensions.ARB_texture_compression) {
if (img->IsCompressed && !isProxy)
*params = img->CompressedSize;
else
@@ -919,7 +897,7 @@ _mesa_GetTexLevelParameteriv( GLenum target, GLint level,
}
return;
case GL_TEXTURE_COMPRESSED_ARB:
- if (ctx->Extensions.HaveTextureCompression) {
+ if (ctx->Extensions.ARB_texture_compression) {
*params = (GLint) img->IsCompressed;
}
else {
@@ -1280,7 +1258,7 @@ _mesa_TexGenfv( GLenum coord, GLenum pname, const GLfloat *params )
return;
}
- ctx->NewState |= NEW_TEXTURING;
+ ctx->NewState |= _NEW_TEXTURE;
}
@@ -1608,6 +1586,7 @@ _mesa_ActiveTextureARB( GLenum target )
if (ctx->Driver.ActiveTexture) {
(*ctx->Driver.ActiveTexture)( ctx, (GLuint) texUnit );
}
+ ctx->NewState |= _NEW_TEXTURE;
}
else {
gl_error(ctx, GL_INVALID_OPERATION, "glActiveTextureARB(target)");
@@ -1627,6 +1606,7 @@ _mesa_ClientActiveTextureARB( GLenum target )
if (target >= GL_TEXTURE0_ARB && target < GL_TEXTURE0_ARB + maxUnits) {
GLint texUnit = target - GL_TEXTURE0_ARB;
ctx->Array.ActiveTexture = texUnit;
+ ctx->NewState |= _NEW_ARRAY;
}
else {
gl_error(ctx, GL_INVALID_OPERATION, "glActiveTextureARB(target)");
@@ -1694,7 +1674,7 @@ void gl_remove_texobj_from_dirty_list( struct gl_shared_state *shared,
/*
- * This is called by gl_update_state() if the NEW_TEXTURING bit in
+ * This is called by gl_update_state() if the _NEW_TEXTURE bit in
* ctx->NewState is set.
*/
void gl_update_dirty_texobjs( GLcontext *ctx )