Move i915tex driver into place as just i915.

1 files changed, 359 insertions, 0 deletions

diff --git a/src/mesa/drivers/dri/i915/i915_texstate.c b/src/mesa/drivers/dri/i915/i915_texstate.c
new file mode 100644
index 0000000000..09684e87b4
--- /dev/null
+++ b/src/mesa/drivers/dri/i915/i915_texstate.c
@@ -0,0 +1,359 @@
+/**************************************************************************
+ * 
+ * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * All Rights Reserved.
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ * 
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
+ * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ * 
+ **************************************************************************/
+
+#include "mtypes.h"
+#include "enums.h"
+#include "texformat.h"
+#include "dri_bufmgr.h"
+
+#include "intel_mipmap_tree.h"
+#include "intel_tex.h"
+
+#include "i915_context.h"
+#include "i915_reg.h"
+
+
+static GLuint
+translate_texture_format(GLuint mesa_format)
+{
+   switch (mesa_format) {
+   case MESA_FORMAT_L8:
+      return MAPSURF_8BIT | MT_8BIT_L8;
+   case MESA_FORMAT_I8:
+      return MAPSURF_8BIT | MT_8BIT_I8;
+   case MESA_FORMAT_A8:
+      return MAPSURF_8BIT | MT_8BIT_A8;
+   case MESA_FORMAT_AL88:
+      return MAPSURF_16BIT | MT_16BIT_AY88;
+   case MESA_FORMAT_RGB565:
+      return MAPSURF_16BIT | MT_16BIT_RGB565;
+   case MESA_FORMAT_ARGB1555:
+      return MAPSURF_16BIT | MT_16BIT_ARGB1555;
+   case MESA_FORMAT_ARGB4444:
+      return MAPSURF_16BIT | MT_16BIT_ARGB4444;
+   case MESA_FORMAT_ARGB8888:
+      return MAPSURF_32BIT | MT_32BIT_ARGB8888;
+   case MESA_FORMAT_YCBCR_REV:
+      return (MAPSURF_422 | MT_422_YCRCB_NORMAL);
+   case MESA_FORMAT_YCBCR:
+      return (MAPSURF_422 | MT_422_YCRCB_SWAPY);
+   case MESA_FORMAT_RGB_FXT1:
+   case MESA_FORMAT_RGBA_FXT1:
+      return (MAPSURF_COMPRESSED | MT_COMPRESS_FXT1);
+   case MESA_FORMAT_Z16:
+      return (MAPSURF_16BIT | MT_16BIT_L16);
+   case MESA_FORMAT_RGBA_DXT1:
+   case MESA_FORMAT_RGB_DXT1:
+      return (MAPSURF_COMPRESSED | MT_COMPRESS_DXT1);
+   case MESA_FORMAT_RGBA_DXT3:
+      return (MAPSURF_COMPRESSED | MT_COMPRESS_DXT2_3);
+   case MESA_FORMAT_RGBA_DXT5:
+      return (MAPSURF_COMPRESSED | MT_COMPRESS_DXT4_5);
+   case MESA_FORMAT_Z24_S8:
+      return (MAPSURF_32BIT | MT_32BIT_xL824);
+   default:
+      fprintf(stderr, "%s: bad image format %x\n", __FUNCTION__, mesa_format);
+      abort();
+      return 0;
+   }
+}
+
+
+
+
+/* The i915 (and related graphics cores) do not support GL_CLAMP.  The
+ * Intel drivers for "other operating systems" implement GL_CLAMP as
+ * GL_CLAMP_TO_EDGE, so the same is done here.
+ */
+static GLuint
+translate_wrap_mode(GLenum wrap)
+{
+   switch (wrap) {
+   case GL_REPEAT:
+      return TEXCOORDMODE_WRAP;
+   case GL_CLAMP:
+      return TEXCOORDMODE_CLAMP_EDGE;   /* not quite correct */
+   case GL_CLAMP_TO_EDGE:
+      return TEXCOORDMODE_CLAMP_EDGE;
+   case GL_CLAMP_TO_BORDER:
+      return TEXCOORDMODE_CLAMP_BORDER;
+   case GL_MIRRORED_REPEAT:
+      return TEXCOORDMODE_MIRROR;
+   default:
+      return TEXCOORDMODE_WRAP;
+   }
+}
+
+
+
+/* Recalculate all state from scratch.  Perhaps not the most
+ * efficient, but this has gotten complex enough that we need
+ * something which is understandable and reliable.
+ */
+static GLboolean
+i915_update_tex_unit(struct intel_context *intel, GLuint unit, GLuint ss3)
+{
+   GLcontext *ctx = &intel->ctx;
+   struct i915_context *i915 = i915_context(ctx);
+   struct gl_texture_object *tObj = ctx->Texture.Unit[unit]._Current;
+   struct intel_texture_object *intelObj = intel_texture_object(tObj);
+   struct gl_texture_image *firstImage;
+   GLuint *state = i915->state.Tex[unit], format, pitch;
+
+   memset(state, 0, sizeof(state));
+
+   /*We need to refcount these. */
+
+   if (i915->state.tex_buffer[unit] != NULL) {
+       dri_bo_unreference(i915->state.tex_buffer[unit]);
+       i915->state.tex_buffer[unit] = NULL;
+   }
+
+   if (!intelObj->imageOverride && !intel_finalize_mipmap_tree(intel, unit))
+      return GL_FALSE;
+
+   /* Get first image here, since intelObj->firstLevel will get set in
+    * the intel_finalize_mipmap_tree() call above.
+    */
+   firstImage = tObj->Image[0][intelObj->firstLevel];
+
+   if (intelObj->imageOverride) {
+      i915->state.tex_buffer[unit] = NULL;
+      i915->state.tex_offset[unit] = intelObj->textureOffset;
+
+      switch (intelObj->depthOverride) {
+      case 32:
+	 format = MAPSURF_32BIT | MT_32BIT_ARGB8888;
+	 break;
+      case 24:
+      default:
+	 format = MAPSURF_32BIT | MT_32BIT_XRGB8888;
+	 break;
+      case 16:
+	 format = MAPSURF_16BIT | MT_16BIT_RGB565;
+	 break;
+      }
+
+      pitch = intelObj->pitchOverride;
+   } else {
+      dri_bo_reference(intelObj->mt->region->buffer);
+      i915->state.tex_buffer[unit] = intelObj->mt->region->buffer;
+      i915->state.tex_offset[unit] =  intel_miptree_image_offset(intelObj->mt,
+								 0, intelObj->
+								 firstLevel);
+
+      format = translate_texture_format(firstImage->TexFormat->MesaFormat);
+      pitch = intelObj->mt->pitch * intelObj->mt->cpp;
+   }
+
+   state[I915_TEXREG_MS3] =
+      (((firstImage->Height - 1) << MS3_HEIGHT_SHIFT) |
+       ((firstImage->Width - 1) << MS3_WIDTH_SHIFT) | format |
+       MS3_USE_FENCE_REGS);
+
+   state[I915_TEXREG_MS4] =
+     ((((pitch / 4) - 1) << MS4_PITCH_SHIFT) | MS4_CUBE_FACE_ENA_MASK |
+       ((((intelObj->lastLevel - intelObj->firstLevel) * 4)) <<
+	MS4_MAX_LOD_SHIFT) | ((firstImage->Depth - 1) <<
+			      MS4_VOLUME_DEPTH_SHIFT));
+
+
+   {
+      GLuint minFilt, mipFilt, magFilt;
+
+      switch (tObj->MinFilter) {
+      case GL_NEAREST:
+         minFilt = FILTER_NEAREST;
+         mipFilt = MIPFILTER_NONE;
+         break;
+      case GL_LINEAR:
+         minFilt = FILTER_LINEAR;
+         mipFilt = MIPFILTER_NONE;
+         break;
+      case GL_NEAREST_MIPMAP_NEAREST:
+         minFilt = FILTER_NEAREST;
+         mipFilt = MIPFILTER_NEAREST;
+         break;
+      case GL_LINEAR_MIPMAP_NEAREST:
+         minFilt = FILTER_LINEAR;
+         mipFilt = MIPFILTER_NEAREST;
+         break;
+      case GL_NEAREST_MIPMAP_LINEAR:
+         minFilt = FILTER_NEAREST;
+         mipFilt = MIPFILTER_LINEAR;
+         break;
+      case GL_LINEAR_MIPMAP_LINEAR:
+         minFilt = FILTER_LINEAR;
+         mipFilt = MIPFILTER_LINEAR;
+         break;
+      default:
+         return GL_FALSE;
+      }
+
+      if (tObj->MaxAnisotropy > 1.0) {
+         minFilt = FILTER_ANISOTROPIC;
+         magFilt = FILTER_ANISOTROPIC;
+      }
+      else {
+         switch (tObj->MagFilter) {
+         case GL_NEAREST:
+            magFilt = FILTER_NEAREST;
+            break;
+         case GL_LINEAR:
+            magFilt = FILTER_LINEAR;
+            break;
+         default:
+            return GL_FALSE;
+         }
+      }
+
+      state[I915_TEXREG_SS2] = i915->lodbias_ss2[unit];
+
+      /* YUV conversion:
+       */
+      if (firstImage->TexFormat->MesaFormat == MESA_FORMAT_YCBCR ||
+          firstImage->TexFormat->MesaFormat == MESA_FORMAT_YCBCR_REV)
+         state[I915_TEXREG_SS2] |= SS2_COLORSPACE_CONVERSION;
+
+      /* Shadow:
+       */
+      if (tObj->CompareMode == GL_COMPARE_R_TO_TEXTURE_ARB &&
+          tObj->Target != GL_TEXTURE_3D) {
+
+         state[I915_TEXREG_SS2] |=
+            (SS2_SHADOW_ENABLE |
+             intel_translate_compare_func(tObj->CompareFunc));
+
+         minFilt = FILTER_4X4_FLAT;
+         magFilt = FILTER_4X4_FLAT;
+      }
+
+      state[I915_TEXREG_SS2] |= ((minFilt << SS2_MIN_FILTER_SHIFT) |
+                                 (mipFilt << SS2_MIP_FILTER_SHIFT) |
+                                 (magFilt << SS2_MAG_FILTER_SHIFT));
+   }
+
+   {
+      GLenum ws = tObj->WrapS;
+      GLenum wt = tObj->WrapT;
+      GLenum wr = tObj->WrapR;
+
+
+      /* 3D textures don't seem to respect the border color.
+       * Fallback if there's ever a danger that they might refer to
+       * it.  
+       * 
+       * Effectively this means fallback on 3D clamp or
+       * clamp_to_border.
+       */
+      if (tObj->Target == GL_TEXTURE_3D &&
+          (tObj->MinFilter != GL_NEAREST ||
+           tObj->MagFilter != GL_NEAREST) &&
+          (ws == GL_CLAMP ||
+           wt == GL_CLAMP ||
+           wr == GL_CLAMP ||
+           ws == GL_CLAMP_TO_BORDER ||
+           wt == GL_CLAMP_TO_BORDER || wr == GL_CLAMP_TO_BORDER))
+         return GL_FALSE;
+
+
+      state[I915_TEXREG_SS3] = ss3;     /* SS3_NORMALIZED_COORDS */
+
+      state[I915_TEXREG_SS3] |=
+         ((translate_wrap_mode(ws) << SS3_TCX_ADDR_MODE_SHIFT) |
+          (translate_wrap_mode(wt) << SS3_TCY_ADDR_MODE_SHIFT) |
+          (translate_wrap_mode(wr) << SS3_TCZ_ADDR_MODE_SHIFT));
+
+      state[I915_TEXREG_SS3] |= (unit << SS3_TEXTUREMAP_INDEX_SHIFT);
+   }
+
+
+   state[I915_TEXREG_SS4] = INTEL_PACKCOLOR8888(tObj->_BorderChan[0],
+                                                tObj->_BorderChan[1],
+                                                tObj->_BorderChan[2],
+                                                tObj->_BorderChan[3]);
+
+
+   I915_ACTIVESTATE(i915, I915_UPLOAD_TEX(unit), GL_TRUE);
+   /* memcmp was already disabled, but definitely won't work as the
+    * region might now change and that wouldn't be detected:
+    */
+   I915_STATECHANGE(i915, I915_UPLOAD_TEX(unit));
+
+
+#if 0
+   DBG(TEXTURE, "state[I915_TEXREG_SS2] = 0x%x\n", state[I915_TEXREG_SS2]);
+   DBG(TEXTURE, "state[I915_TEXREG_SS3] = 0x%x\n", state[I915_TEXREG_SS3]);
+   DBG(TEXTURE, "state[I915_TEXREG_SS4] = 0x%x\n", state[I915_TEXREG_SS4]);
+   DBG(TEXTURE, "state[I915_TEXREG_MS2] = 0x%x\n", state[I915_TEXREG_MS2]);
+   DBG(TEXTURE, "state[I915_TEXREG_MS3] = 0x%x\n", state[I915_TEXREG_MS3]);
+   DBG(TEXTURE, "state[I915_TEXREG_MS4] = 0x%x\n", state[I915_TEXREG_MS4]);
+#endif
+
+   return GL_TRUE;
+}
+
+
+
+
+void
+i915UpdateTextureState(struct intel_context *intel)
+{
+   GLboolean ok = GL_TRUE;
+   GLuint i;
+
+   for (i = 0; i < I915_TEX_UNITS && ok; i++) {
+      switch (intel->ctx.Texture.Unit[i]._ReallyEnabled) {
+      case TEXTURE_1D_BIT:
+      case TEXTURE_2D_BIT:
+      case TEXTURE_CUBE_BIT:
+      case TEXTURE_3D_BIT:
+         ok = i915_update_tex_unit(intel, i, SS3_NORMALIZED_COORDS);
+         break;
+      case TEXTURE_RECT_BIT:
+         ok = i915_update_tex_unit(intel, i, 0);
+         break;
+      case 0:{
+            struct i915_context *i915 = i915_context(&intel->ctx);
+            if (i915->state.active & I915_UPLOAD_TEX(i))
+               I915_ACTIVESTATE(i915, I915_UPLOAD_TEX(i), GL_FALSE);
+
+	    if (i915->state.tex_buffer[i] != NULL) {
+	       dri_bo_unreference(i915->state.tex_buffer[i]);
+	       i915->state.tex_buffer[i] = NULL;
+	    }
+
+            break;
+         }
+      default:
+         ok = GL_FALSE;
+         break;
+      }
+   }
+
+   FALLBACK(intel, I915_FALLBACK_TEXTURE, !ok);
+}