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

1 files changed, 143 insertions, 0 deletions

diff --git a/src/mesa/drivers/dri/i915/i830_context.c b/src/mesa/drivers/dri/i915/i830_context.c
new file mode 100644
index 00000000000..4acec31265d
--- /dev/null
+++ b/src/mesa/drivers/dri/i915/i830_context.c
@@ -0,0 +1,143 @@
+/**************************************************************************
+ * 
+ * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * All Rights Reserved.
+ * 
+ **************************************************************************/
+
+#include "i830_context.h"
+#include "imports.h"
+#include "texmem.h"
+#include "intel_tex.h"
+#include "tnl/tnl.h"
+#include "tnl/t_vertex.h"
+#include "tnl/t_context.h"
+
+
+/***************************************
+ * Mesa's Driver Functions
+ ***************************************/
+
+/* This is the extension list explicitly enabled by the client and
+ * excludes functionality available in Mesa and also excludes legacy
+ * extensions.  It is recognized that in an open source driver, those
+ * extensions will probably be re-enabled.
+ */
+static const GLubyte *i830GetString( GLcontext *ctx, GLenum name )
+{
+   if (name == GL_EXTENSIONS)
+      return 
+	 "GL_ARB_multitexture "
+	 "GL_ARB_texture_border_clamp "
+	 "GL_ARB_texture_compression "
+	 "GL_ARB_texture_env_add "
+	 "GL_ARB_texture_env_combine "
+	 "GL_ARB_texture_env_dot3 "
+	 "GL_ARB_texture_mirrored_repeat "
+	 "GL_ARB_transpose_matrix "
+	 "GL_ARB_vertex_buffer_object "
+	 "GL_ARB_vertex_program "
+	 "GL_ARB_window_pos "
+	 "GL_EXT_abgr "
+	 "GL_EXT_bgra "
+	 "GL_EXT_blend_color "
+	 "GL_EXT_blend_func_separate "
+	 "GL_EXT_blend_minmax "
+	 "GL_EXT_blend_subtract "
+	 "GL_EXT_clip_volume_hint "
+	 "GL_EXT_compiled_vertex_array "
+	 "GL_EXT_draw_range_elements "
+	 "GL_EXT_fog_coord "
+	 "GL_EXT_multi_draw_arrays "
+	 "GL_EXT_packed_pixels "
+	 "GL_EXT_rescale_normal "
+	 "GL_EXT_secondary_color "
+	 "GL_EXT_separate_specular_color "
+	 "GL_EXT_stencil_wrap "
+	 "GL_EXT_texture_env_add "
+	 "GL_EXT_texture_env_combine "
+	 "GL_EXT_texture_filter_anisotropic "
+	 "GL_IBM_texture_mirrored_repeat "
+	 "GL_MESA_ycbcr_texture "
+	 "GL_MESA_window_pos "
+	 "GL_NV_texgen_reflection "
+	 "GL_SGIS_generate_mipmap ";
+ 
+   return intelGetString( ctx, name );
+}
+
+
+static void i830InitDriverFunctions( struct dd_function_table *functions )
+{
+   intelInitDriverFunctions( functions );
+   i830InitStateFuncs( functions );
+   i830InitTextureFuncs( functions );
+   functions->GetString = i830GetString;
+}
+
+
+GLboolean i830CreateContext( const __GLcontextModes *mesaVis,
+			    __DRIcontextPrivate *driContextPriv,
+			    void *sharedContextPrivate)
+{
+   struct dd_function_table functions;
+   i830ContextPtr i830 = (i830ContextPtr) CALLOC_STRUCT(i830_context);
+   intelContextPtr intel = &i830->intel;
+   GLcontext *ctx = &intel->ctx;
+   if (!i830) return GL_FALSE;
+
+   i830InitVtbl( i830 );
+   i830InitDriverFunctions( &functions );
+
+   if (!intelInitContext( intel, mesaVis, driContextPriv,
+			  sharedContextPrivate, &functions )) {
+      FREE(i830);
+      return GL_FALSE;
+   }
+
+   intel->ctx.Const.MaxTextureUnits = I830_TEX_UNITS;
+   intel->ctx.Const.MaxTextureImageUnits = I830_TEX_UNITS;
+   intel->ctx.Const.MaxTextureCoordUnits = I830_TEX_UNITS;
+
+   intel->nr_heaps = 1;
+   intel->texture_heaps[0] = 
+      driCreateTextureHeap( 0, intel,
+			    intel->intelScreen->textureSize,
+			    12,
+			    I830_NR_TEX_REGIONS,
+			    intel->sarea->texList,
+			    & intel->sarea->texAge,
+			    & intel->swapped,
+			    sizeof( struct i830_texture_object ),
+			    (destroy_texture_object_t *)intelDestroyTexObj );
+
+   /* FIXME: driCalculateMaxTextureLevels assumes that mipmaps are tightly
+    * FIXME: packed, but they're not in Intel graphics hardware.
+    */
+   intel->ctx.Const.MaxTextureUnits = 1;
+   driCalculateMaxTextureLevels( intel->texture_heaps,
+				 intel->nr_heaps,
+				 &intel->ctx.Const,
+				 4,
+				 11, /* max 2D texture size is 2048x2048 */
+				 8,  /* max 3D texture size is 256^3 */
+				 0,  /* max CUBE. not supported */
+				 0,  /* max RECT. supported, but not enabled */
+				 12,
+				 GL_FALSE );
+   intel->ctx.Const.MaxTextureUnits = I830_TEX_UNITS;
+
+   _tnl_init_vertices( ctx, ctx->Const.MaxArrayLockSize + 12, 
+		       18 * sizeof(GLfloat) );
+
+   intel->verts = TNL_CONTEXT(ctx)->clipspace.vertex_buf;
+
+   i830InitState( i830 );
+
+
+   _tnl_allow_vertex_fog( ctx, 1 ); 
+   _tnl_allow_pixel_fog( ctx, 0 ); 
+
+   return GL_TRUE;
+}
+