src/mesa/drivers/dri/i915/i915_tex.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28 #include "glheader.h"
  29 #include "mtypes.h"
  30 #include "imports.h"
  31 #include "simple_list.h"
  32 #include "enums.h"
  33 #include "image.h"
  34 #include "texstore.h"
  35 #include "texformat.h"
  36 #include "texmem.h"
  37 #include "swrast/swrast.h"
  38
  39 #include "mm.h"
  40
  41 #include "intel_ioctl.h"
  42
  43 #include "i915_context.h"
  44 #include "i915_reg.h"
  45
  46
  47
  48
  49
  50
  51 /**
  52  * Allocate space for and load the mesa images into the texture memory block.
  53  * This will happen before drawing with a new texture, or drawing with a
  54  * texture after it was swapped out or teximaged again.
  55  */
  56
  57 intelTextureObjectPtr i915AllocTexObj( struct gl_texture_object *texObj )
  58 {
  59    i915TextureObjectPtr t = CALLOC_STRUCT( i915_texture_object );
  60    if ( !t )
  61       return NULL;
  62
  63    texObj->DriverData = t;
  64    t->intel.base.tObj = texObj;
  65    t->intel.dirty = I915_UPLOAD_TEX_ALL;
  66    make_empty_list( &t->intel.base );
  67    return &t->intel;
  68 }
  69
  70
  71 static void i915TexParameter( GLcontext *ctx, GLenum target,
  72                              struct gl_texture_object *tObj,
  73                              GLenum pname, const GLfloat *params )
  74 {
  75    i915TextureObjectPtr t = (i915TextureObjectPtr) tObj->DriverData;
  76
  77    switch (pname) {
  78    case GL_TEXTURE_MIN_FILTER:
  79    case GL_TEXTURE_MAG_FILTER:
  80    case GL_TEXTURE_MAX_ANISOTROPY_EXT:
  81    case GL_TEXTURE_WRAP_S:
  82    case GL_TEXTURE_WRAP_T:
  83    case GL_TEXTURE_WRAP_R:
  84    case GL_TEXTURE_BORDER_COLOR:
  85       t->intel.dirty = I915_UPLOAD_TEX_ALL;
  86       break;
  87
  88    case GL_TEXTURE_COMPARE_MODE:
  89       t->intel.dirty = I915_UPLOAD_TEX_ALL;
  90       break;
  91    case GL_TEXTURE_COMPARE_FUNC:
  92       t->intel.dirty = I915_UPLOAD_TEX_ALL;
  93       break;
  94
  95    case GL_TEXTURE_BASE_LEVEL:
  96    case GL_TEXTURE_MAX_LEVEL:
  97    case GL_TEXTURE_MIN_LOD:
  98    case GL_TEXTURE_MAX_LOD:
  99       /* The i915 and its successors can do a lot of this without
 100        * reloading the textures.  A project for someone?
 101        */
 102       intelFlush( ctx );
 103       driSwapOutTextureObject( (driTextureObject *) t );
 104       t->intel.dirty = I915_UPLOAD_TEX_ALL;
 105       break;
 106
 107    default:
 108       return;
 109    }
 110 }
 111
 112
 113 static void i915TexEnv( GLcontext *ctx, GLenum target,
 114                         GLenum pname, const GLfloat *param )
 115 {
 116    i915ContextPtr i915 = I915_CONTEXT( ctx );
 117    GLuint unit = ctx->Texture.CurrentUnit;
 118
 119    switch (pname) {
 120    case GL_TEXTURE_ENV_COLOR:   /* Should be a tracked param */
 121    case GL_TEXTURE_ENV_MODE:
 122    case GL_COMBINE_RGB:
 123    case GL_COMBINE_ALPHA:
 124    case GL_SOURCE0_RGB:
 125    case GL_SOURCE1_RGB:
 126    case GL_SOURCE2_RGB:
 127    case GL_SOURCE0_ALPHA:
 128    case GL_SOURCE1_ALPHA:
 129    case GL_SOURCE2_ALPHA:
 130    case GL_OPERAND0_RGB:
 131    case GL_OPERAND1_RGB:
 132    case GL_OPERAND2_RGB:
 133    case GL_OPERAND0_ALPHA:
 134    case GL_OPERAND1_ALPHA:
 135    case GL_OPERAND2_ALPHA:
 136    case GL_RGB_SCALE:
 137    case GL_ALPHA_SCALE:
 138       i915->tex_program.translated = 0;
 139       break;
 140
 141    case GL_TEXTURE_LOD_BIAS: {
 142       int b = (int) ((*param) * 16.0);
 143       if (b > 255) b = 255;
 144       if (b < -256) b = -256;
 145       I915_STATECHANGE(i915, I915_UPLOAD_TEX(unit));
 146       i915->state.Tex[unit][I915_TEXREG_SS2] &= ~SS2_LOD_BIAS_MASK;
 147       i915->state.Tex[unit][I915_TEXREG_SS2] |=
 148          ((b << SS2_LOD_BIAS_SHIFT) & SS2_LOD_BIAS_MASK);
 149       break;
 150    }
 151
 152    default:
 153       break;
 154    }
 155 }
 156
 157
 158 static void i915BindTexture( GLcontext *ctx, GLenum target,
 159                             struct gl_texture_object *texObj )
 160 {
 161    i915TextureObjectPtr tex;
 162
 163    if (!texObj->DriverData)
 164       i915AllocTexObj( texObj );
 165
 166    tex = (i915TextureObjectPtr)texObj->DriverData;
 167
 168    if (tex->lastTarget != texObj->Target) {
 169       tex->intel.dirty = I915_UPLOAD_TEX_ALL;
 170       tex->lastTarget = texObj->Target;
 171    }
 172
 173    /* Need this if image format changes between bound textures.
 174     * Could try and shortcircuit by checking for differences in
 175     * state between incoming and outgoing textures:
 176     */
 177    I915_CONTEXT(ctx)->tex_program.translated = 0;
 178 }
 179
 180
 181
 182 void i915InitTextureFuncs( struct dd_function_table *functions )
 183 {
 184    functions->BindTexture = i915BindTexture;
 185    functions->TexEnv = i915TexEnv;
 186    functions->TexParameter = i915TexParameter;
 187 }