New driver for i915 as well as older i830/i845/i865 chipsets.

1 files changed, 155 insertions, 0 deletions

diff --git a/src/mesa/drivers/dri/i915/i915_tex.c b/src/mesa/drivers/dri/i915/i915_tex.c
new file mode 100644
index 00000000000..8d371516616
--- /dev/null
+++ b/src/mesa/drivers/dri/i915/i915_tex.c
@@ -0,0 +1,155 @@
+/**************************************************************************
+ * 
+ * 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;
+}