Checkpoint of a super-simplified i915 driver in the pipe model.

Doesn't yet compile, but when it does, it will only draw gouraud tris
and even those will be as simple as possible.  Needs some 'winsys' support
also before that can happen.

1 files changed, 241 insertions, 0 deletions

diff --git a/src/mesa/pipe/i915simple/i915_state_emit.c b/src/mesa/pipe/i915simple/i915_state_emit.c
new file mode 100644
index 0000000000..dd7932bc0d
--- /dev/null
+++ b/src/mesa/pipe/i915simple/i915_state_emit.c
@@ -0,0 +1,241 @@
+/**************************************************************************
+ * 
+ * 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 "glheader.h"
+#include "mtypes.h"
+
+#include "i915_reg.h"
+#include "i915_context.h"
+#include "i915_winsys.h"
+#include "i915_batch.h"
+#include "i915_reg.h"
+
+#include "pipe/p_context.h"
+#include "pipe/p_defines.h"
+
+static unsigned translate_format( unsigned format )
+{
+   switch (format) {
+   case PIPE_FORMAT_U_R8_G8_B8_A8:
+      return COLOR_BUF_ARGB8888;
+   case PIPE_FORMAT_U_R5_G6_B5:
+      return COLOR_BUF_RGB565;
+   default:
+      assert(0);
+      return 0;
+   }
+}
+
+static unsigned translate_depth_format( unsigned zformat )
+{
+   assert(zformat == PIPE_FORMAT_S8_Z24);
+   return DEPTH_FRMT_24_FIXED_8_OTHER;
+}
+
+
+/* Push the state into the sarea and/or texture memory.
+ */
+void
+i915_emit_hardware_state(struct i915_context *i915 )
+{
+   BEGIN_BATCH(100, 10);
+
+   {
+      OUT_BATCH(_3DSTATE_AA_CMD |
+		AA_LINE_ECAAR_WIDTH_ENABLE |
+		AA_LINE_ECAAR_WIDTH_1_0 |
+		AA_LINE_REGION_WIDTH_ENABLE | AA_LINE_REGION_WIDTH_1_0);
+   }
+
+   {
+      OUT_BATCH(_3DSTATE_DFLT_DIFFUSE_CMD);
+      OUT_BATCH(0);
+
+      OUT_BATCH(_3DSTATE_DFLT_SPEC_CMD);
+      OUT_BATCH(0);
+      
+      OUT_BATCH(_3DSTATE_DFLT_Z_CMD);
+      OUT_BATCH(0);
+   }
+
+
+   {
+      OUT_BATCH(_3DSTATE_COORD_SET_BINDINGS |
+		CSB_TCB(0, 0) |
+		CSB_TCB(1, 1) |
+		CSB_TCB(2, 2) |
+		CSB_TCB(3, 3) |
+		CSB_TCB(4, 4) | 
+		CSB_TCB(5, 5) | 
+		CSB_TCB(6, 6) | 
+		CSB_TCB(7, 7));
+   }
+
+   {
+      OUT_BATCH(_3DSTATE_RASTER_RULES_CMD |
+		ENABLE_POINT_RASTER_RULE |
+		OGL_POINT_RASTER_RULE |
+		ENABLE_LINE_STRIP_PROVOKE_VRTX |
+		ENABLE_TRI_FAN_PROVOKE_VRTX |
+		LINE_STRIP_PROVOKE_VRTX(1) |
+		TRI_FAN_PROVOKE_VRTX(2) | 
+		ENABLE_TEXKILL_3D_4D | 
+		TEXKILL_4D);
+   }
+
+   /* Need to initialize this to zero.
+    */
+   {
+      OUT_BATCH(_3DSTATE_LOAD_STATE_IMMEDIATE_1 | I1_LOAD_S(3) | (1));
+      OUT_BATCH(0);
+   }
+
+   
+   {
+      OUT_BATCH(_3DSTATE_SCISSOR_ENABLE_CMD | DISABLE_SCISSOR_RECT);
+      
+      OUT_BATCH(_3DSTATE_SCISSOR_RECT_0_CMD);
+      OUT_BATCH(0);
+      OUT_BATCH(0);
+   }
+
+   {      
+      OUT_BATCH(_3DSTATE_DEPTH_SUBRECT_DISABLE);
+   }
+
+   {
+      OUT_BATCH(_3DSTATE_LOAD_INDIRECT | 0);       /* disable indirect state */
+      OUT_BATCH(0);
+   }
+
+   
+   {
+      /* Don't support twosided stencil yet */
+      OUT_BATCH(_3DSTATE_BACKFACE_STENCIL_OPS | BFO_ENABLE_STENCIL_TWO_SIDE | 0);
+   }
+
+
+
+   {
+      OUT_BATCH(_3DSTATE_LOAD_STATE_IMMEDIATE_1 | 
+		I1_LOAD_S(2) |
+		I1_LOAD_S(4) |
+		I1_LOAD_S(5) |
+		I1_LOAD_S(6) | 
+		(3));
+      
+      OUT_BATCH(0);
+      OUT_BATCH(S4_VFMT_XYZ | S4_VFMT_COLOR);
+      OUT_BATCH(0);
+      OUT_BATCH(S6_COLOR_WRITE_ENABLE |
+		(2 << S6_TRISTRIP_PV_SHIFT));
+   }
+
+   {
+      OUT_BATCH(_3DSTATE_MODES_4_CMD |
+		ENABLE_LOGIC_OP_FUNC |
+		LOGIC_OP_FUNC(LOGICOP_COPY) |
+		ENABLE_STENCIL_TEST_MASK |
+		STENCIL_TEST_MASK(0xff) |
+		ENABLE_STENCIL_WRITE_MASK |
+		STENCIL_WRITE_MASK(0xff));
+   }
+   
+   {
+      OUT_BATCH(_3DSTATE_INDEPENDENT_ALPHA_BLEND_CMD |
+		IAB_MODIFY_ENABLE |
+		IAB_MODIFY_FUNC |
+		IAB_MODIFY_SRC_FACTOR |
+		IAB_MODIFY_DST_FACTOR);
+   }
+
+
+   if (i915->framebuffer.cbufs[0]) {
+      struct pipe_region *cbuf_region = i915->framebuffer.cbufs[0]->region;
+      unsigned pitch = (cbuf_region->pitch *
+			cbuf_region->cpp);
+
+      OUT_BATCH(_3DSTATE_BUF_INFO_CMD);
+
+      OUT_BATCH(BUF_3D_ID_COLOR_BACK | 
+		BUF_3D_PITCH(pitch) |  /* pitch in bytes */
+		BUF_3D_USE_FENCE);
+
+      OUT_RELOC(cbuf_region->buffer,
+		I915_BUFFER_ACCESS_WRITE,
+		cbuf_region->draw_offset);
+   }
+
+   /* What happens if no zbuf??
+    */
+   if (i915->framebuffer.zbuf) {
+      struct pipe_region *depth_region = i915->framebuffer.zbuf->region;
+      unsigned zpitch = (depth_region->pitch *
+			 depth_region->cpp);
+			 
+      OUT_BATCH(_3DSTATE_BUF_INFO_CMD);
+
+      OUT_BATCH(BUF_3D_ID_DEPTH |
+		BUF_3D_PITCH(zpitch) |  /* pitch in bytes */
+		BUF_3D_USE_FENCE);
+
+      OUT_RELOC(depth_region->buffer,
+		I915_BUFFER_ACCESS_WRITE,
+		depth_region->draw_offset);
+   }
+
+   
+   {
+      unsigned cformat = i915->framebuffer.cbufs[0]->format;
+      unsigned zformat = i915->framebuffer.zbuf->format;
+
+      OUT_BATCH(_3DSTATE_DST_BUF_VARS_CMD);
+
+      OUT_BATCH(DSTORG_HORT_BIAS(0x8) | /* .5 */
+		DSTORG_VERT_BIAS(0x8) | /* .5 */
+		LOD_PRECLAMP_OGL |
+		TEX_DEFAULT_COLOR_OGL |
+		translate_format( cformat ) |
+		translate_depth_format( zformat ));
+   }
+
+   {
+      OUT_BATCH(_3DSTATE_STIPPLE);
+      OUT_BATCH(0);
+   }
+
+   {
+      GLuint i, dwords;
+      GLuint *prog = i915_passthrough_program( &dwords );
+      
+      for (i = 0; i < dwords; i++)
+	 OUT_BATCH( prog[i] );
+   }
+}
+