summaryrefslogtreecommitdiff
path: root/src/gallium/drivers/i915simple/i915_state_derived.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/gallium/drivers/i915simple/i915_state_derived.c')
-rw-r--r--src/gallium/drivers/i915simple/i915_state_derived.c183
1 files changed, 183 insertions, 0 deletions
diff --git a/src/gallium/drivers/i915simple/i915_state_derived.c b/src/gallium/drivers/i915simple/i915_state_derived.c
new file mode 100644
index 0000000000..488615067c
--- /dev/null
+++ b/src/gallium/drivers/i915simple/i915_state_derived.c
@@ -0,0 +1,183 @@
+/**************************************************************************
+ *
+ * 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 "util/u_memory.h"
+#include "pipe/p_shader_tokens.h"
+#include "draw/draw_context.h"
+#include "draw/draw_vertex.h"
+#include "i915_context.h"
+#include "i915_state.h"
+#include "i915_reg.h"
+#include "i915_fpc.h"
+
+
+
+/**
+ * Determine the hardware vertex layout.
+ * Depends on vertex/fragment shader state.
+ */
+static void calculate_vertex_layout( struct i915_context *i915 )
+{
+ const struct i915_fragment_shader *fs = i915->fs;
+ const enum interp_mode colorInterp = i915->rasterizer->color_interp;
+ struct vertex_info vinfo;
+ boolean texCoords[8], colors[2], fog, needW;
+ uint i;
+ int src;
+
+ memset(texCoords, 0, sizeof(texCoords));
+ colors[0] = colors[1] = fog = needW = FALSE;
+ memset(&vinfo, 0, sizeof(vinfo));
+
+ /* Determine which fragment program inputs are needed. Setup HW vertex
+ * layout below, in the HW-specific attribute order.
+ */
+ for (i = 0; i < fs->info.num_inputs; i++) {
+ switch (fs->info.input_semantic_name[i]) {
+ case TGSI_SEMANTIC_POSITION:
+ break;
+ case TGSI_SEMANTIC_COLOR:
+ assert(fs->info.input_semantic_index[i] < 2);
+ colors[fs->info.input_semantic_index[i]] = TRUE;
+ break;
+ case TGSI_SEMANTIC_GENERIC:
+ /* usually a texcoord */
+ {
+ const uint unit = fs->info.input_semantic_index[i];
+ assert(unit < 8);
+ texCoords[unit] = TRUE;
+ needW = TRUE;
+ }
+ break;
+ case TGSI_SEMANTIC_FOG:
+ fog = TRUE;
+ break;
+ default:
+ assert(0);
+ }
+ }
+
+
+ /* pos */
+ src = draw_find_vs_output(i915->draw, TGSI_SEMANTIC_POSITION, 0);
+ if (needW) {
+ draw_emit_vertex_attr(&vinfo, EMIT_4F, INTERP_LINEAR, src);
+ vinfo.hwfmt[0] |= S4_VFMT_XYZW;
+ vinfo.emit[0] = EMIT_4F;
+ }
+ else {
+ draw_emit_vertex_attr(&vinfo, EMIT_3F, INTERP_LINEAR, src);
+ vinfo.hwfmt[0] |= S4_VFMT_XYZ;
+ vinfo.emit[0] = EMIT_3F;
+ }
+
+ /* hardware point size */
+ /* XXX todo */
+
+ /* primary color */
+ if (colors[0]) {
+ src = draw_find_vs_output(i915->draw, TGSI_SEMANTIC_COLOR, 0);
+ draw_emit_vertex_attr(&vinfo, EMIT_4UB, colorInterp, src);
+ vinfo.hwfmt[0] |= S4_VFMT_COLOR;
+ }
+
+ /* secondary color */
+ if (colors[1]) {
+ src = draw_find_vs_output(i915->draw, TGSI_SEMANTIC_COLOR, 1);
+ draw_emit_vertex_attr(&vinfo, EMIT_4UB, colorInterp, src);
+ vinfo.hwfmt[0] |= S4_VFMT_SPEC_FOG;
+ }
+
+ /* fog coord, not fog blend factor */
+ if (fog) {
+ src = draw_find_vs_output(i915->draw, TGSI_SEMANTIC_FOG, 0);
+ draw_emit_vertex_attr(&vinfo, EMIT_1F, INTERP_PERSPECTIVE, src);
+ vinfo.hwfmt[0] |= S4_VFMT_FOG_PARAM;
+ }
+
+ /* texcoords */
+ for (i = 0; i < 8; i++) {
+ uint hwtc;
+ if (texCoords[i]) {
+ hwtc = TEXCOORDFMT_4D;
+ src = draw_find_vs_output(i915->draw, TGSI_SEMANTIC_GENERIC, i);
+ draw_emit_vertex_attr(&vinfo, EMIT_4F, INTERP_PERSPECTIVE, src);
+ }
+ else {
+ hwtc = TEXCOORDFMT_NOT_PRESENT;
+ }
+ vinfo.hwfmt[1] |= hwtc << (i * 4);
+ }
+
+ draw_compute_vertex_size(&vinfo);
+
+ if (memcmp(&i915->current.vertex_info, &vinfo, sizeof(vinfo))) {
+ /* Need to set this flag so that the LIS2/4 registers get set.
+ * It also means the i915_update_immediate() function must be called
+ * after this one, in i915_update_derived().
+ */
+ i915->dirty |= I915_NEW_VERTEX_FORMAT;
+
+ memcpy(&i915->current.vertex_info, &vinfo, sizeof(vinfo));
+ }
+}
+
+
+
+
+/* Hopefully this will remain quite simple, otherwise need to pull in
+ * something like the state tracker mechanism.
+ */
+void i915_update_derived( struct i915_context *i915 )
+{
+ if (i915->dirty & (I915_NEW_RASTERIZER | I915_NEW_FS | I915_NEW_VS))
+ calculate_vertex_layout( i915 );
+
+ if (i915->dirty & (I915_NEW_SAMPLER | I915_NEW_TEXTURE))
+ i915_update_samplers(i915);
+
+ if (i915->dirty & I915_NEW_TEXTURE)
+ i915_update_textures(i915);
+
+ if (i915->dirty)
+ i915_update_immediate( i915 );
+
+ if (i915->dirty)
+ i915_update_dynamic( i915 );
+
+ if (i915->dirty & I915_NEW_FS) {
+ i915->hardware_dirty |= I915_HW_PROGRAM; /* XXX right? */
+ }
+
+ /* HW emit currently references framebuffer state directly:
+ */
+ if (i915->dirty & I915_NEW_FRAMEBUFFER)
+ i915->hardware_dirty |= I915_HW_STATIC;
+
+ i915->dirty = 0;
+}