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Diffstat (limited to 'src/gallium/drivers/i965/brw_pipe_shader.c')
-rw-r--r--src/gallium/drivers/i965/brw_pipe_shader.c299
1 files changed, 299 insertions, 0 deletions
diff --git a/src/gallium/drivers/i965/brw_pipe_shader.c b/src/gallium/drivers/i965/brw_pipe_shader.c
new file mode 100644
index 0000000000..31a715ab65
--- /dev/null
+++ b/src/gallium/drivers/i965/brw_pipe_shader.c
@@ -0,0 +1,299 @@
+/*
+ Copyright (C) Intel Corp. 2006. All Rights Reserved.
+ Intel funded Tungsten Graphics (http://www.tungstengraphics.com) to
+ develop this 3D driver.
+
+ 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, sublicense, 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 NONINFRINGEMENT.
+ IN NO EVENT SHALL THE COPYRIGHT OWNER(S) 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.
+
+ **********************************************************************/
+ /*
+ * Authors:
+ * Keith Whitwell <keith@tungstengraphics.com>
+ */
+
+#include "util/u_memory.h"
+
+#include "tgsi/tgsi_parse.h"
+#include "tgsi/tgsi_scan.h"
+
+#include "brw_context.h"
+#include "brw_util.h"
+#include "brw_wm.h"
+
+
+/**
+ * Determine if the given shader uses complex features such as flow
+ * conditionals, loops, subroutines.
+ */
+static GLboolean has_flow_control(const struct tgsi_shader_info *info)
+{
+ return (info->opcode_count[TGSI_OPCODE_ARL] > 0 ||
+ info->opcode_count[TGSI_OPCODE_IF] > 0 ||
+ info->opcode_count[TGSI_OPCODE_ENDIF] > 0 || /* redundant - IF */
+ info->opcode_count[TGSI_OPCODE_CAL] > 0 ||
+ info->opcode_count[TGSI_OPCODE_BRK] > 0 || /* redundant - BGNLOOP */
+ info->opcode_count[TGSI_OPCODE_RET] > 0 || /* redundant - CAL */
+ info->opcode_count[TGSI_OPCODE_BGNLOOP] > 0);
+}
+
+
+static void scan_immediates(const struct tgsi_token *tokens,
+ const struct tgsi_shader_info *info,
+ struct brw_immediate_data *imm)
+{
+ struct tgsi_parse_context parse;
+ boolean done = FALSE;
+
+ imm->nr = 0;
+ imm->data = MALLOC(info->immediate_count * 4 * sizeof(float));
+
+ tgsi_parse_init( &parse, tokens );
+ while (!tgsi_parse_end_of_tokens( &parse ) && !done) {
+ tgsi_parse_token( &parse );
+
+ switch (parse.FullToken.Token.Type) {
+ case TGSI_TOKEN_TYPE_DECLARATION:
+ break;
+
+ case TGSI_TOKEN_TYPE_IMMEDIATE: {
+ static const float id[4] = {0,0,0,1};
+ const float *value = &parse.FullToken.FullImmediate.u[0].Float;
+ unsigned size = parse.FullToken.FullImmediate.Immediate.NrTokens - 1;
+ unsigned i;
+
+ for (i = 0; i < size; i++)
+ imm->data[imm->nr][i] = value[i];
+
+ for (; i < 4; i++)
+ imm->data[imm->nr][i] = id[i];
+
+ imm->nr++;
+ break;
+ }
+
+ case TGSI_TOKEN_TYPE_INSTRUCTION:
+ done = 1;
+ break;
+ }
+ }
+}
+
+
+static void brw_bind_fs_state( struct pipe_context *pipe, void *prog )
+{
+ struct brw_fragment_shader *fs = (struct brw_fragment_shader *)prog;
+ struct brw_context *brw = brw_context(pipe);
+
+ if (brw->curr.fragment_shader == fs)
+ return;
+
+ if (brw->curr.fragment_shader == NULL ||
+ fs == NULL ||
+ memcmp(&brw->curr.fragment_shader->signature, &fs->signature,
+ brw_fs_signature_size(&fs->signature)) != 0) {
+ brw->state.dirty.mesa |= PIPE_NEW_FRAGMENT_SIGNATURE;
+ }
+
+ brw->curr.fragment_shader = fs;
+ brw->state.dirty.mesa |= PIPE_NEW_FRAGMENT_SHADER;
+}
+
+static void brw_bind_vs_state( struct pipe_context *pipe, void *prog )
+{
+ struct brw_context *brw = brw_context(pipe);
+
+ brw->curr.vertex_shader = (struct brw_vertex_shader *)prog;
+ brw->state.dirty.mesa |= PIPE_NEW_VERTEX_SHADER;
+}
+
+
+
+static void *brw_create_fs_state( struct pipe_context *pipe,
+ const struct pipe_shader_state *shader )
+{
+ struct brw_context *brw = brw_context(pipe);
+ struct brw_fragment_shader *fs;
+ int i;
+
+ fs = CALLOC_STRUCT(brw_fragment_shader);
+ if (fs == NULL)
+ return NULL;
+
+ /* Duplicate tokens, scan shader
+ */
+ fs->id = brw->program_id++;
+ fs->has_flow_control = has_flow_control(&fs->info);
+
+ fs->tokens = tgsi_dup_tokens(shader->tokens);
+ if (fs->tokens == NULL)
+ goto fail;
+
+ tgsi_scan_shader(fs->tokens, &fs->info);
+ scan_immediates(fs->tokens, &fs->info, &fs->immediates);
+
+ fs->signature.nr_inputs = fs->info.num_inputs;
+ for (i = 0; i < fs->info.num_inputs; i++) {
+ fs->signature.input[i].interp = fs->info.input_interpolate[i];
+ fs->signature.input[i].semantic = fs->info.input_semantic_name[i];
+ fs->signature.input[i].semantic_index = fs->info.input_semantic_index[i];
+ }
+
+ for (i = 0; i < fs->info.num_inputs; i++)
+ if (fs->info.input_semantic_name[i] == TGSI_SEMANTIC_POSITION)
+ fs->uses_depth = 1;
+
+ if (fs->info.uses_kill)
+ fs->iz_lookup |= IZ_PS_KILL_ALPHATEST_BIT;
+
+ if (fs->info.writes_z)
+ fs->iz_lookup |= IZ_PS_COMPUTES_DEPTH_BIT;
+
+ return (void *)fs;
+
+fail:
+ FREE(fs);
+ return NULL;
+}
+
+
+static void *brw_create_vs_state( struct pipe_context *pipe,
+ const struct pipe_shader_state *shader )
+{
+ struct brw_context *brw = brw_context(pipe);
+ struct brw_vertex_shader *vs;
+ unsigned i;
+
+ vs = CALLOC_STRUCT(brw_vertex_shader);
+ if (vs == NULL)
+ return NULL;
+
+ /* Duplicate tokens, scan shader
+ */
+ vs->tokens = tgsi_dup_tokens(shader->tokens);
+ if (vs->tokens == NULL)
+ goto fail;
+
+ tgsi_scan_shader(vs->tokens, &vs->info);
+ scan_immediates(vs->tokens, &vs->info, &vs->immediates);
+
+ vs->id = brw->program_id++;
+ vs->has_flow_control = has_flow_control(&vs->info);
+
+ for (i = 0; i < vs->info.num_outputs; i++) {
+ int index = vs->info.output_semantic_index[i];
+ switch (vs->info.output_semantic_name[i]) {
+ case TGSI_SEMANTIC_POSITION:
+ vs->output_hpos = i;
+ break;
+ case TGSI_SEMANTIC_COLOR:
+ if (index == 0)
+ vs->output_color0 = i;
+ else
+ vs->output_color1 = i;
+ break;
+ case TGSI_SEMANTIC_BCOLOR:
+ if (index == 0)
+ vs->output_bfc0 = i;
+ else
+ vs->output_bfc1 = i;
+ break;
+#if 0
+ case TGSI_SEMANTIC_EDGEFLAG:
+ vs->output_edgeflag = i;
+ break;
+#endif
+ }
+ }
+
+
+
+ /* Done:
+ */
+ return (void *)vs;
+
+fail:
+ FREE(vs);
+ return NULL;
+}
+
+
+static void brw_delete_fs_state( struct pipe_context *pipe, void *prog )
+{
+ struct brw_fragment_shader *fs = (struct brw_fragment_shader *)prog;
+
+ bo_reference(&fs->const_buffer, NULL);
+ FREE( (void *)fs->tokens );
+ FREE( fs );
+}
+
+
+static void brw_delete_vs_state( struct pipe_context *pipe, void *prog )
+{
+ struct brw_fragment_shader *vs = (struct brw_fragment_shader *)prog;
+
+ /* Delete draw shader
+ */
+ FREE( (void *)vs->tokens );
+ FREE( vs );
+}
+
+
+static void brw_set_constant_buffer(struct pipe_context *pipe,
+ uint shader, uint index,
+ const struct pipe_constant_buffer *buf)
+{
+ struct brw_context *brw = brw_context(pipe);
+
+ assert(index == 0);
+
+ if (shader == PIPE_SHADER_FRAGMENT) {
+ pipe_buffer_reference( &brw->curr.fragment_constants,
+ buf->buffer );
+
+ brw->state.dirty.mesa |= PIPE_NEW_FRAGMENT_CONSTANTS;
+ }
+ else {
+ pipe_buffer_reference( &brw->curr.vertex_constants,
+ buf->buffer );
+
+ brw->state.dirty.mesa |= PIPE_NEW_VERTEX_CONSTANTS;
+ }
+}
+
+
+void brw_pipe_shader_init( struct brw_context *brw )
+{
+ brw->base.set_constant_buffer = brw_set_constant_buffer;
+
+ brw->base.create_vs_state = brw_create_vs_state;
+ brw->base.bind_vs_state = brw_bind_vs_state;
+ brw->base.delete_vs_state = brw_delete_vs_state;
+
+ brw->base.create_fs_state = brw_create_fs_state;
+ brw->base.bind_fs_state = brw_bind_fs_state;
+ brw->base.delete_fs_state = brw_delete_fs_state;
+}
+
+void brw_pipe_shader_cleanup( struct brw_context *brw )
+{
+ pipe_buffer_reference( &brw->curr.fragment_constants, NULL );
+ pipe_buffer_reference( &brw->curr.vertex_constants, NULL );
+}
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