src/gallium/drivers/svga/svga_pipe_vs.c - platform/external/mesa3d - Git at Google

 /**********************************************************
  * Copyright 2008-2009 VMware, Inc.  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, 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 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 AUTHORS OR COPYRIGHT HOLDERS
  * 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 "draw/draw_context.h"
 #include "util/u_inlines.h"
 #include "util/u_math.h"
 #include "util/u_memory.h"
 #include "util/u_bitmask.h"
 #include "tgsi/tgsi_parse.h"
 #include "tgsi/tgsi_text.h"

 #include "svga_context.h"
 #include "svga_hw_reg.h"
 #include "svga_cmd.h"
 #include "svga_debug.h"
 #include "svga_shader.h"
 #include "svga_streamout.h"


 /**
  * Substitute a debug shader.
  */
 static const struct tgsi_token *
 substitute_vs(unsigned shader_id, const struct tgsi_token *old_tokens)
 {
 #if 0
    if (shader_id == 12) {
    static struct tgsi_token tokens[300];

    const char *text =
       "VERT\n"
       "DCL IN[0]\n"
       "DCL IN[1]\n"
       "DCL IN[2]\n"
       "DCL OUT[0], POSITION\n"
       "DCL TEMP[0..4]\n"
       "IMM FLT32 {     1.0000,     1.0000,     1.0000,     1.0000 }\n"
       "IMM FLT32 {     0.45,     1.0000,     1.0000,     1.0000 }\n"
       "IMM FLT32 { 1.297863, 0.039245, 0.035993, 0.035976}\n"
       "IMM FLT32 { -0.019398, 1.696131, -0.202151, -0.202050  }\n"
       "IMM FLT32 { 0.051711, -0.348713, -0.979204, -0.978714  }\n"
       "IMM FLT32 { 0.000000, 0.000003, 139.491577, 141.421356 }\n"
       "DCL CONST[0..7]\n"
       "DCL CONST[9..16]\n"
       "  MOV TEMP[2], IMM[0]\n"

       "  MOV TEMP[2].xyz, IN[2]\n"
       "  MOV TEMP[2].xyz, IN[0]\n"
       "  MOV TEMP[2].xyz, IN[1]\n"

       "  MUL TEMP[1], IMM[3], TEMP[2].yyyy\n"
       "  MAD TEMP[3], IMM[2],  TEMP[2].xxxx, TEMP[1]\n"
       "  MAD TEMP[1], IMM[4], TEMP[2].zzzz, TEMP[3]\n"
       "  MAD TEMP[4], IMM[5], TEMP[2].wwww, TEMP[1]\n"

       "  MOV OUT[0], TEMP[4]\n"
       "  END\n";

    if (!tgsi_text_translate(text,
                              tokens,
                              ARRAY_SIZE(tokens)))
    {
       assert(0);
       return NULL;
    }

    return tokens;
    }
 #endif

    return old_tokens;
 }


 static void *
 svga_create_vs_state(struct pipe_context *pipe,
                      const struct pipe_shader_state *templ)
 {
    struct svga_context *svga = svga_context(pipe);
    struct svga_vertex_shader *vs = CALLOC_STRUCT(svga_vertex_shader);

    if (!vs)
       return NULL;

    SVGA_STATS_TIME_PUSH(svga_sws(svga), SVGA_STATS_TIME_CREATEVS);

    /* substitute a debug shader?
     */
    vs->base.tokens = tgsi_dup_tokens(substitute_vs(svga->debug.shader_id,
                                                    templ->tokens));

    /* Collect basic info that we'll need later:
     */
    tgsi_scan_shader(vs->base.tokens, &vs->base.info);

    {
       /* Need to do construct a new template in case we substitued a
        * debug shader.
        */
       struct pipe_shader_state tmp2 = *templ;
       tmp2.tokens = vs->base.tokens;
       vs->draw_shader = draw_create_vertex_shader(svga->swtnl.draw, &tmp2);
    }

    vs->base.id = svga->debug.shader_id++;

    vs->generic_outputs = svga_get_generic_outputs_mask(&vs->base.info);

    /* check for any stream output declarations */
    if (templ->stream_output.num_outputs) {
       vs->base.stream_output = svga_create_stream_output(svga, &vs->base,
                                                          &templ->stream_output);
    }

    SVGA_STATS_TIME_POP(svga_sws(svga));
    return vs;
 }


 static void
 svga_bind_vs_state(struct pipe_context *pipe, void *shader)
 {
    struct svga_vertex_shader *vs = (struct svga_vertex_shader *)shader;
    struct svga_context *svga = svga_context(pipe);

    if (vs == svga->curr.vs)
       return;

    /* If the currently bound vertex shader has a generated geometry shader,
     * then unbind the geometry shader before binding a new vertex shader.
     * We need to unbind the geometry shader here because there is no
     * pipe_shader associated with the generated geometry shader.
     */
    if (svga->curr.vs != NULL && svga->curr.vs->gs != NULL)
       svga->pipe.bind_gs_state(&svga->pipe, NULL);

    svga->curr.vs = vs;
    svga->dirty |= SVGA_NEW_VS;
 }


 static void
 svga_delete_vs_state(struct pipe_context *pipe, void *shader)
 {
    struct svga_context *svga = svga_context(pipe);
    struct svga_vertex_shader *vs = (struct svga_vertex_shader *)shader;
    struct svga_vertex_shader *next_vs;
    struct svga_shader_variant *variant, *tmp;

    svga_hwtnl_flush_retry(svga);

    assert(vs->base.parent == NULL);

    while (vs) {
       next_vs = (struct svga_vertex_shader *)vs->base.next;

       /* Check if there is a generated geometry shader to go with this
        * vertex shader. If there is, then delete the geometry shader as well.
        */
       if (vs->gs != NULL) {
          svga->pipe.delete_gs_state(&svga->pipe, vs->gs);
       }

       if (vs->base.stream_output != NULL)
          svga_delete_stream_output(svga, vs->base.stream_output);

       draw_delete_vertex_shader(svga->swtnl.draw, vs->draw_shader);

       for (variant = vs->base.variants; variant; variant = tmp) {
          tmp = variant->next;

          /* Check if deleting currently bound shader */
          if (variant == svga->state.hw_draw.vs) {
             SVGA_RETRY(svga, svga_set_shader(svga, SVGA3D_SHADERTYPE_VS, NULL));
             svga->state.hw_draw.vs = NULL;
          }

          svga_destroy_shader_variant(svga, variant);
       }

       FREE((void *)vs->base.tokens);
       FREE(vs);
       vs = next_vs;
    }
 }


 void
 svga_init_vs_functions(struct svga_context *svga)
 {
    svga->pipe.create_vs_state = svga_create_vs_state;
    svga->pipe.bind_vs_state = svga_bind_vs_state;
    svga->pipe.delete_vs_state = svga_delete_vs_state;
 }
	/**********************************************************
	* Copyright 2008-2009 VMware, Inc. 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, 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 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 AUTHORS OR COPYRIGHT HOLDERS
	* 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 "draw/draw_context.h"
	#include "util/u_inlines.h"
	#include "util/u_math.h"
	#include "util/u_memory.h"
	#include "util/u_bitmask.h"
	#include "tgsi/tgsi_parse.h"
	#include "tgsi/tgsi_text.h"

	#include "svga_context.h"
	#include "svga_hw_reg.h"
	#include "svga_cmd.h"
	#include "svga_debug.h"
	#include "svga_shader.h"
	#include "svga_streamout.h"


	/**
	* Substitute a debug shader.
	*/
	static const struct tgsi_token *
	substitute_vs(unsigned shader_id, const struct tgsi_token *old_tokens)
	{
	#if 0
	if (shader_id == 12) {
	static struct tgsi_token tokens[300];

	const char *text =
	"VERT\n"
	"DCL IN[0]\n"
	"DCL IN[1]\n"
	"DCL IN[2]\n"
	"DCL OUT[0], POSITION\n"
	"DCL TEMP[0..4]\n"
	"IMM FLT32 { 1.0000, 1.0000, 1.0000, 1.0000 }\n"
	"IMM FLT32 { 0.45, 1.0000, 1.0000, 1.0000 }\n"
	"IMM FLT32 { 1.297863, 0.039245, 0.035993, 0.035976}\n"
	"IMM FLT32 { -0.019398, 1.696131, -0.202151, -0.202050 }\n"
	"IMM FLT32 { 0.051711, -0.348713, -0.979204, -0.978714 }\n"
	"IMM FLT32 { 0.000000, 0.000003, 139.491577, 141.421356 }\n"
	"DCL CONST[0..7]\n"
	"DCL CONST[9..16]\n"
	" MOV TEMP[2], IMM[0]\n"

	" MOV TEMP[2].xyz, IN[2]\n"
	" MOV TEMP[2].xyz, IN[0]\n"
	" MOV TEMP[2].xyz, IN[1]\n"

	" MUL TEMP[1], IMM[3], TEMP[2].yyyy\n"
	" MAD TEMP[3], IMM[2], TEMP[2].xxxx, TEMP[1]\n"
	" MAD TEMP[1], IMM[4], TEMP[2].zzzz, TEMP[3]\n"
	" MAD TEMP[4], IMM[5], TEMP[2].wwww, TEMP[1]\n"

	" MOV OUT[0], TEMP[4]\n"
	" END\n";

	if (!tgsi_text_translate(text,
	tokens,
	ARRAY_SIZE(tokens)))
	{
	assert(0);
	return NULL;
	}

	return tokens;
	}
	#endif

	return old_tokens;
	}


	static void *
	svga_create_vs_state(struct pipe_context *pipe,
	const struct pipe_shader_state *templ)
	{
	struct svga_context *svga = svga_context(pipe);
	struct svga_vertex_shader *vs = CALLOC_STRUCT(svga_vertex_shader);

	if (!vs)
	return NULL;

	SVGA_STATS_TIME_PUSH(svga_sws(svga), SVGA_STATS_TIME_CREATEVS);

	/* substitute a debug shader?
	*/
	vs->base.tokens = tgsi_dup_tokens(substitute_vs(svga->debug.shader_id,
	templ->tokens));

	/* Collect basic info that we'll need later:
	*/
	tgsi_scan_shader(vs->base.tokens, &vs->base.info);

	{
	/* Need to do construct a new template in case we substitued a
	* debug shader.
	*/
	struct pipe_shader_state tmp2 = *templ;
	tmp2.tokens = vs->base.tokens;
	vs->draw_shader = draw_create_vertex_shader(svga->swtnl.draw, &tmp2);
	}

	vs->base.id = svga->debug.shader_id++;

	vs->generic_outputs = svga_get_generic_outputs_mask(&vs->base.info);

	/* check for any stream output declarations */
	if (templ->stream_output.num_outputs) {
	vs->base.stream_output = svga_create_stream_output(svga, &vs->base,
	&templ->stream_output);
	}

	SVGA_STATS_TIME_POP(svga_sws(svga));
	return vs;
	}


	static void
	svga_bind_vs_state(struct pipe_context pipe, void shader)
	{
	struct svga_vertex_shader vs = (struct svga_vertex_shader )shader;
	struct svga_context *svga = svga_context(pipe);

	if (vs == svga->curr.vs)
	return;

	/* If the currently bound vertex shader has a generated geometry shader,
	* then unbind the geometry shader before binding a new vertex shader.
	* We need to unbind the geometry shader here because there is no
	* pipe_shader associated with the generated geometry shader.
	*/
	if (svga->curr.vs != NULL && svga->curr.vs->gs != NULL)
	svga->pipe.bind_gs_state(&svga->pipe, NULL);

	svga->curr.vs = vs;
	svga->dirty \|= SVGA_NEW_VS;
	}


	static void
	svga_delete_vs_state(struct pipe_context pipe, void shader)
	{
	struct svga_context *svga = svga_context(pipe);
	struct svga_vertex_shader vs = (struct svga_vertex_shader )shader;
	struct svga_vertex_shader *next_vs;
	struct svga_shader_variant variant, tmp;

	svga_hwtnl_flush_retry(svga);

	assert(vs->base.parent == NULL);

	while (vs) {
	next_vs = (struct svga_vertex_shader *)vs->base.next;

	/* Check if there is a generated geometry shader to go with this
	* vertex shader. If there is, then delete the geometry shader as well.
	*/
	if (vs->gs != NULL) {
	svga->pipe.delete_gs_state(&svga->pipe, vs->gs);
	}

	if (vs->base.stream_output != NULL)
	svga_delete_stream_output(svga, vs->base.stream_output);

	draw_delete_vertex_shader(svga->swtnl.draw, vs->draw_shader);

	for (variant = vs->base.variants; variant; variant = tmp) {
	tmp = variant->next;

	/* Check if deleting currently bound shader */
	if (variant == svga->state.hw_draw.vs) {
	SVGA_RETRY(svga, svga_set_shader(svga, SVGA3D_SHADERTYPE_VS, NULL));
	svga->state.hw_draw.vs = NULL;
	}

	svga_destroy_shader_variant(svga, variant);
	}

	FREE((void *)vs->base.tokens);
	FREE(vs);
	vs = next_vs;
	}
	}


	void
	svga_init_vs_functions(struct svga_context *svga)
	{
	svga->pipe.create_vs_state = svga_create_vs_state;
	svga->pipe.bind_vs_state = svga_bind_vs_state;
	svga->pipe.delete_vs_state = svga_delete_vs_state;
	}