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/**************************************************************************
*
* Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
* All Rights Reserved.
*
**************************************************************************/
#include "glheader.h"
#include "mtypes.h"
#include "imports.h"
#include "simple_list.h"
#include "enums.h"
#include "image.h"
#include "texstore.h"
#include "texformat.h"
#include "texmem.h"
#include "swrast/swrast.h"
#include "mm.h"
#include "intel_ioctl.h"
#include "i915_context.h"
#include "i915_reg.h"
/**
* Allocate space for and load the mesa images into the texture memory block.
* This will happen before drawing with a new texture, or drawing with a
* texture after it was swapped out or teximaged again.
*/
intelTextureObjectPtr i915AllocTexObj( struct gl_texture_object *texObj )
{
i915TextureObjectPtr t = CALLOC_STRUCT( i915_texture_object );
if ( !t )
return NULL;
texObj->DriverData = t;
t->intel.base.tObj = texObj;
t->intel.dirty = I915_UPLOAD_TEX_ALL;
make_empty_list( &t->intel.base );
return &t->intel;
}
static void i915TexParameter( GLcontext *ctx, GLenum target,
struct gl_texture_object *tObj,
GLenum pname, const GLfloat *params )
{
i915TextureObjectPtr t = (i915TextureObjectPtr) tObj->DriverData;
switch (pname) {
case GL_TEXTURE_MIN_FILTER:
case GL_TEXTURE_MAG_FILTER:
case GL_TEXTURE_MAX_ANISOTROPY_EXT:
case GL_TEXTURE_WRAP_S:
case GL_TEXTURE_WRAP_T:
case GL_TEXTURE_WRAP_R:
case GL_TEXTURE_BORDER_COLOR:
t->intel.dirty = I915_UPLOAD_TEX_ALL;
break;
case GL_TEXTURE_BASE_LEVEL:
case GL_TEXTURE_MAX_LEVEL:
case GL_TEXTURE_MIN_LOD:
case GL_TEXTURE_MAX_LOD:
/* The i915 and its successors can do a lot of this without
* reloading the textures. A project for someone?
*/
intelFlush( ctx );
driSwapOutTextureObject( (driTextureObject *) t );
t->intel.dirty = I915_UPLOAD_TEX_ALL;
break;
default:
return;
}
}
static void i915TexEnv( GLcontext *ctx, GLenum target,
GLenum pname, const GLfloat *param )
{
i915ContextPtr i915 = I915_CONTEXT( ctx );
GLuint unit = ctx->Texture.CurrentUnit;
switch (pname) {
case GL_TEXTURE_ENV_COLOR: /* Should be a tracked param */
case GL_TEXTURE_ENV_MODE:
case GL_COMBINE_RGB:
case GL_COMBINE_ALPHA:
case GL_SOURCE0_RGB:
case GL_SOURCE1_RGB:
case GL_SOURCE2_RGB:
case GL_SOURCE0_ALPHA:
case GL_SOURCE1_ALPHA:
case GL_SOURCE2_ALPHA:
case GL_OPERAND0_RGB:
case GL_OPERAND1_RGB:
case GL_OPERAND2_RGB:
case GL_OPERAND0_ALPHA:
case GL_OPERAND1_ALPHA:
case GL_OPERAND2_ALPHA:
case GL_RGB_SCALE:
case GL_ALPHA_SCALE:
i915->tex_program.translated = 0;
break;
case GL_TEXTURE_LOD_BIAS: {
int b = (int) ((*param) * 16.0);
if (b > 255) b = 255;
if (b < -256) b = -256;
I915_STATECHANGE(i915, I915_UPLOAD_TEX(unit));
i915->state.Tex[unit][I915_TEXREG_SS2] &= ~SS2_LOD_BIAS_MASK;
i915->state.Tex[unit][I915_TEXREG_SS2] |=
((b << SS2_LOD_BIAS_SHIFT) & SS2_LOD_BIAS_MASK);
break;
}
default:
break;
}
}
static void i915BindTexture( GLcontext *ctx, GLenum target,
struct gl_texture_object *texObj )
{
i915TextureObjectPtr tex = (i915TextureObjectPtr)texObj->DriverData;
if (tex->lastTarget != texObj->Target) {
tex->intel.dirty = I915_UPLOAD_TEX_ALL;
tex->lastTarget = texObj->Target;
}
/* Need this if image format changes between bound textures.
* Could try and shortcircuit by checking for differences in
* state between incoming and outgoing textures:
*/
I915_CONTEXT(ctx)->tex_program.translated = 0;
}
void i915InitTextureFuncs( struct dd_function_table *functions )
{
functions->BindTexture = i915BindTexture;
functions->TexEnv = i915TexEnv;
functions->TexParameter = i915TexParameter;
}
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