diff options
Diffstat (limited to 'mesalib/src/mesa/state_tracker/st_atom_pixeltransfer.c')
-rw-r--r-- | mesalib/src/mesa/state_tracker/st_atom_pixeltransfer.c | 688 |
1 files changed, 344 insertions, 344 deletions
diff --git a/mesalib/src/mesa/state_tracker/st_atom_pixeltransfer.c b/mesalib/src/mesa/state_tracker/st_atom_pixeltransfer.c index 95b706cb9..fcffc8734 100644 --- a/mesalib/src/mesa/state_tracker/st_atom_pixeltransfer.c +++ b/mesalib/src/mesa/state_tracker/st_atom_pixeltransfer.c @@ -1,344 +1,344 @@ -/************************************************************************** - * - * Copyright 2007 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. - * - **************************************************************************/ - -/* - * Generate fragment programs to implement pixel transfer ops, such as - * scale/bias, colortable, convolution... - * - * Authors: - * Brian Paul - */ - -#include "main/imports.h" -#include "main/image.h" -#include "main/macros.h" -#include "program/program.h" -#include "program/prog_cache.h" -#include "program/prog_instruction.h" -#include "program/prog_parameter.h" -#include "program/prog_print.h" - -#include "st_context.h" -#include "st_format.h" -#include "st_texture.h" - -#include "pipe/p_screen.h" -#include "pipe/p_context.h" -#include "util/u_inlines.h" -#include "util/u_pack_color.h" - - -struct state_key -{ - GLuint scaleAndBias:1; - GLuint pixelMaps:1; - -#if 0 - GLfloat Maps[3][256][4]; - int NumMaps; - GLint NumStages; - pipeline_stage Stages[STAGE_MAX]; - GLboolean StagesUsed[STAGE_MAX]; - GLfloat Scale1[4], Bias1[4]; - GLfloat Scale2[4], Bias2[4]; -#endif -}; - -static void -make_state_key(struct gl_context *ctx, struct state_key *key) -{ - memset(key, 0, sizeof(*key)); - - if (ctx->Pixel.RedBias != 0.0 || ctx->Pixel.RedScale != 1.0 || - ctx->Pixel.GreenBias != 0.0 || ctx->Pixel.GreenScale != 1.0 || - ctx->Pixel.BlueBias != 0.0 || ctx->Pixel.BlueScale != 1.0 || - ctx->Pixel.AlphaBias != 0.0 || ctx->Pixel.AlphaScale != 1.0) { - key->scaleAndBias = 1; - } - - key->pixelMaps = ctx->Pixel.MapColorFlag; -} - - -static struct pipe_resource * -create_color_map_texture(struct gl_context *ctx) -{ - struct st_context *st = st_context(ctx); - struct pipe_context *pipe = st->pipe; - struct pipe_resource *pt; - enum pipe_format format; - const uint texSize = 256; /* simple, and usually perfect */ - - /* find an RGBA texture format */ - format = st_choose_format(pipe->screen, GL_RGBA, - PIPE_TEXTURE_2D, 0, PIPE_BIND_SAMPLER_VIEW); - - /* create texture for color map/table */ - pt = st_texture_create(st, PIPE_TEXTURE_2D, format, 0, - texSize, texSize, 1, 1, PIPE_BIND_SAMPLER_VIEW); - return pt; -} - - -/** - * Update the pixelmap texture with the contents of the R/G/B/A pixel maps. - */ -static void -load_color_map_texture(struct gl_context *ctx, struct pipe_resource *pt) -{ - struct st_context *st = st_context(ctx); - struct pipe_context *pipe = st->pipe; - struct pipe_transfer *transfer; - const GLuint rSize = ctx->PixelMaps.RtoR.Size; - const GLuint gSize = ctx->PixelMaps.GtoG.Size; - const GLuint bSize = ctx->PixelMaps.BtoB.Size; - const GLuint aSize = ctx->PixelMaps.AtoA.Size; - const uint texSize = pt->width0; - uint *dest; - uint i, j; - - transfer = pipe_get_transfer(pipe, - pt, 0, 0, PIPE_TRANSFER_WRITE, - 0, 0, texSize, texSize); - dest = (uint *) pipe_transfer_map(pipe, transfer); - - /* Pack four 1D maps into a 2D texture: - * R map is placed horizontally, indexed by S, in channel 0 - * G map is placed vertically, indexed by T, in channel 1 - * B map is placed horizontally, indexed by S, in channel 2 - * A map is placed vertically, indexed by T, in channel 3 - */ - for (i = 0; i < texSize; i++) { - for (j = 0; j < texSize; j++) { - union util_color uc; - int k = (i * texSize + j); - ubyte r = ctx->PixelMaps.RtoR.Map8[j * rSize / texSize]; - ubyte g = ctx->PixelMaps.GtoG.Map8[i * gSize / texSize]; - ubyte b = ctx->PixelMaps.BtoB.Map8[j * bSize / texSize]; - ubyte a = ctx->PixelMaps.AtoA.Map8[i * aSize / texSize]; - util_pack_color_ub(r, g, b, a, pt->format, &uc); - *(dest + k) = uc.ui; - } - } - - pipe_transfer_unmap(pipe, transfer); - pipe->transfer_destroy(pipe, transfer); -} - - - -#define MAX_INST 100 - -/** - * Returns a fragment program which implements the current pixel transfer ops. - */ -static struct gl_fragment_program * -get_pixel_transfer_program(struct gl_context *ctx, const struct state_key *key) -{ - struct st_context *st = st_context(ctx); - struct prog_instruction inst[MAX_INST]; - struct gl_program_parameter_list *params; - struct gl_fragment_program *fp; - GLuint ic = 0; - const GLuint colorTemp = 0; - - fp = (struct gl_fragment_program *) - ctx->Driver.NewProgram(ctx, GL_FRAGMENT_PROGRAM_ARB, 0); - if (!fp) - return NULL; - - params = _mesa_new_parameter_list(); - - /* - * Get initial pixel color from the texture. - * TEX colorTemp, fragment.texcoord[0], texture[0], 2D; - */ - _mesa_init_instructions(inst + ic, 1); - inst[ic].Opcode = OPCODE_TEX; - inst[ic].DstReg.File = PROGRAM_TEMPORARY; - inst[ic].DstReg.Index = colorTemp; - inst[ic].SrcReg[0].File = PROGRAM_INPUT; - inst[ic].SrcReg[0].Index = FRAG_ATTRIB_TEX0; - inst[ic].TexSrcUnit = 0; - inst[ic].TexSrcTarget = TEXTURE_2D_INDEX; - ic++; - fp->Base.InputsRead = (1 << FRAG_ATTRIB_TEX0); - fp->Base.OutputsWritten = BITFIELD64_BIT(FRAG_RESULT_COLOR); - fp->Base.SamplersUsed = 0x1; /* sampler 0 (bit 0) is used */ - - if (key->scaleAndBias) { - static const gl_state_index scale_state[STATE_LENGTH] = - { STATE_INTERNAL, STATE_PT_SCALE, 0, 0, 0 }; - static const gl_state_index bias_state[STATE_LENGTH] = - { STATE_INTERNAL, STATE_PT_BIAS, 0, 0, 0 }; - GLint scale_p, bias_p; - - scale_p = _mesa_add_state_reference(params, scale_state); - bias_p = _mesa_add_state_reference(params, bias_state); - - /* MAD colorTemp, colorTemp, scale, bias; */ - _mesa_init_instructions(inst + ic, 1); - inst[ic].Opcode = OPCODE_MAD; - inst[ic].DstReg.File = PROGRAM_TEMPORARY; - inst[ic].DstReg.Index = colorTemp; - inst[ic].SrcReg[0].File = PROGRAM_TEMPORARY; - inst[ic].SrcReg[0].Index = colorTemp; - inst[ic].SrcReg[1].File = PROGRAM_STATE_VAR; - inst[ic].SrcReg[1].Index = scale_p; - inst[ic].SrcReg[2].File = PROGRAM_STATE_VAR; - inst[ic].SrcReg[2].Index = bias_p; - ic++; - } - - if (key->pixelMaps) { - const GLuint temp = 1; - - /* create the colormap/texture now if not already done */ - if (!st->pixel_xfer.pixelmap_texture) { - st->pixel_xfer.pixelmap_texture = create_color_map_texture(ctx); - st->pixel_xfer.pixelmap_sampler_view = - st_create_texture_sampler_view(st->pipe, - st->pixel_xfer.pixelmap_texture); - } - - /* with a little effort, we can do four pixel map look-ups with - * two TEX instructions: - */ - - /* TEX temp.rg, colorTemp.rgba, texture[1], 2D; */ - _mesa_init_instructions(inst + ic, 1); - inst[ic].Opcode = OPCODE_TEX; - inst[ic].DstReg.File = PROGRAM_TEMPORARY; - inst[ic].DstReg.Index = temp; - inst[ic].DstReg.WriteMask = WRITEMASK_XY; /* write R,G */ - inst[ic].SrcReg[0].File = PROGRAM_TEMPORARY; - inst[ic].SrcReg[0].Index = colorTemp; - inst[ic].TexSrcUnit = 1; - inst[ic].TexSrcTarget = TEXTURE_2D_INDEX; - ic++; - - /* TEX temp.ba, colorTemp.baba, texture[1], 2D; */ - _mesa_init_instructions(inst + ic, 1); - inst[ic].Opcode = OPCODE_TEX; - inst[ic].DstReg.File = PROGRAM_TEMPORARY; - inst[ic].DstReg.Index = temp; - inst[ic].DstReg.WriteMask = WRITEMASK_ZW; /* write B,A */ - inst[ic].SrcReg[0].File = PROGRAM_TEMPORARY; - inst[ic].SrcReg[0].Index = colorTemp; - inst[ic].SrcReg[0].Swizzle = MAKE_SWIZZLE4(SWIZZLE_Z, SWIZZLE_W, - SWIZZLE_Z, SWIZZLE_W); - inst[ic].TexSrcUnit = 1; - inst[ic].TexSrcTarget = TEXTURE_2D_INDEX; - ic++; - - /* MOV colorTemp, temp; */ - _mesa_init_instructions(inst + ic, 1); - inst[ic].Opcode = OPCODE_MOV; - inst[ic].DstReg.File = PROGRAM_TEMPORARY; - inst[ic].DstReg.Index = colorTemp; - inst[ic].SrcReg[0].File = PROGRAM_TEMPORARY; - inst[ic].SrcReg[0].Index = temp; - ic++; - - fp->Base.SamplersUsed |= (1 << 1); /* sampler 1 is used */ - } - - /* Modify last instruction's dst reg to write to result.color */ - { - struct prog_instruction *last = &inst[ic - 1]; - last->DstReg.File = PROGRAM_OUTPUT; - last->DstReg.Index = FRAG_RESULT_COLOR; - } - - /* END; */ - _mesa_init_instructions(inst + ic, 1); - inst[ic].Opcode = OPCODE_END; - ic++; - - assert(ic <= MAX_INST); - - - fp->Base.Instructions = _mesa_alloc_instructions(ic); - if (!fp->Base.Instructions) { - _mesa_error(ctx, GL_OUT_OF_MEMORY, - "generating pixel transfer program"); - return NULL; - } - - _mesa_copy_instructions(fp->Base.Instructions, inst, ic); - fp->Base.NumInstructions = ic; - fp->Base.Parameters = params; - -#if 0 - printf("========= pixel transfer prog\n"); - _mesa_print_program(&fp->Base); - _mesa_print_parameter_list(fp->Base.Parameters); -#endif - - return fp; -} - - - -/** - * Update st->pixel_xfer.program in response to new pixel-transfer state. - */ -static void -update_pixel_transfer(struct st_context *st) -{ - struct gl_context *ctx = st->ctx; - struct state_key key; - struct gl_fragment_program *fp; - - make_state_key(st->ctx, &key); - - fp = (struct gl_fragment_program *) - _mesa_search_program_cache(st->pixel_xfer.cache, &key, sizeof(key)); - if (!fp) { - fp = get_pixel_transfer_program(st->ctx, &key); - _mesa_program_cache_insert(st->ctx, st->pixel_xfer.cache, - &key, sizeof(key), &fp->Base); - } - - if (ctx->Pixel.MapColorFlag) { - load_color_map_texture(ctx, st->pixel_xfer.pixelmap_texture); - } - st->pixel_xfer.pixelmap_enabled = ctx->Pixel.MapColorFlag; - - st->pixel_xfer.program = (struct st_fragment_program *) fp; -} - - - -const struct st_tracked_state st_update_pixel_transfer = { - "st_update_pixel_transfer", /* name */ - { /* dirty */ - _NEW_PIXEL, /* mesa */ - 0, /* st */ - }, - update_pixel_transfer /* update */ -}; +/**************************************************************************
+ *
+ * Copyright 2007 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.
+ *
+ **************************************************************************/
+
+/*
+ * Generate fragment programs to implement pixel transfer ops, such as
+ * scale/bias, colortable, convolution...
+ *
+ * Authors:
+ * Brian Paul
+ */
+
+#include "main/imports.h"
+#include "main/image.h"
+#include "main/macros.h"
+#include "program/program.h"
+#include "program/prog_cache.h"
+#include "program/prog_instruction.h"
+#include "program/prog_parameter.h"
+#include "program/prog_print.h"
+
+#include "st_context.h"
+#include "st_format.h"
+#include "st_texture.h"
+
+#include "pipe/p_screen.h"
+#include "pipe/p_context.h"
+#include "util/u_inlines.h"
+#include "util/u_pack_color.h"
+
+
+struct state_key
+{
+ GLuint scaleAndBias:1;
+ GLuint pixelMaps:1;
+
+#if 0
+ GLfloat Maps[3][256][4];
+ int NumMaps;
+ GLint NumStages;
+ pipeline_stage Stages[STAGE_MAX];
+ GLboolean StagesUsed[STAGE_MAX];
+ GLfloat Scale1[4], Bias1[4];
+ GLfloat Scale2[4], Bias2[4];
+#endif
+};
+
+static void
+make_state_key(struct gl_context *ctx, struct state_key *key)
+{
+ memset(key, 0, sizeof(*key));
+
+ if (ctx->Pixel.RedBias != 0.0 || ctx->Pixel.RedScale != 1.0 ||
+ ctx->Pixel.GreenBias != 0.0 || ctx->Pixel.GreenScale != 1.0 ||
+ ctx->Pixel.BlueBias != 0.0 || ctx->Pixel.BlueScale != 1.0 ||
+ ctx->Pixel.AlphaBias != 0.0 || ctx->Pixel.AlphaScale != 1.0) {
+ key->scaleAndBias = 1;
+ }
+
+ key->pixelMaps = ctx->Pixel.MapColorFlag;
+}
+
+
+static struct pipe_resource *
+create_color_map_texture(struct gl_context *ctx)
+{
+ struct st_context *st = st_context(ctx);
+ struct pipe_context *pipe = st->pipe;
+ struct pipe_resource *pt;
+ enum pipe_format format;
+ const uint texSize = 256; /* simple, and usually perfect */
+
+ /* find an RGBA texture format */
+ format = st_choose_format(pipe->screen, GL_RGBA,
+ PIPE_TEXTURE_2D, 0, PIPE_BIND_SAMPLER_VIEW);
+
+ /* create texture for color map/table */
+ pt = st_texture_create(st, PIPE_TEXTURE_2D, format, 0,
+ texSize, texSize, 1, 1, PIPE_BIND_SAMPLER_VIEW);
+ return pt;
+}
+
+
+/**
+ * Update the pixelmap texture with the contents of the R/G/B/A pixel maps.
+ */
+static void
+load_color_map_texture(struct gl_context *ctx, struct pipe_resource *pt)
+{
+ struct st_context *st = st_context(ctx);
+ struct pipe_context *pipe = st->pipe;
+ struct pipe_transfer *transfer;
+ const GLuint rSize = ctx->PixelMaps.RtoR.Size;
+ const GLuint gSize = ctx->PixelMaps.GtoG.Size;
+ const GLuint bSize = ctx->PixelMaps.BtoB.Size;
+ const GLuint aSize = ctx->PixelMaps.AtoA.Size;
+ const uint texSize = pt->width0;
+ uint *dest;
+ uint i, j;
+
+ transfer = pipe_get_transfer(pipe,
+ pt, 0, 0, PIPE_TRANSFER_WRITE,
+ 0, 0, texSize, texSize);
+ dest = (uint *) pipe_transfer_map(pipe, transfer);
+
+ /* Pack four 1D maps into a 2D texture:
+ * R map is placed horizontally, indexed by S, in channel 0
+ * G map is placed vertically, indexed by T, in channel 1
+ * B map is placed horizontally, indexed by S, in channel 2
+ * A map is placed vertically, indexed by T, in channel 3
+ */
+ for (i = 0; i < texSize; i++) {
+ for (j = 0; j < texSize; j++) {
+ union util_color uc;
+ int k = (i * texSize + j);
+ ubyte r = ctx->PixelMaps.RtoR.Map8[j * rSize / texSize];
+ ubyte g = ctx->PixelMaps.GtoG.Map8[i * gSize / texSize];
+ ubyte b = ctx->PixelMaps.BtoB.Map8[j * bSize / texSize];
+ ubyte a = ctx->PixelMaps.AtoA.Map8[i * aSize / texSize];
+ util_pack_color_ub(r, g, b, a, pt->format, &uc);
+ *(dest + k) = uc.ui;
+ }
+ }
+
+ pipe_transfer_unmap(pipe, transfer);
+ pipe->transfer_destroy(pipe, transfer);
+}
+
+
+
+#define MAX_INST 100
+
+/**
+ * Returns a fragment program which implements the current pixel transfer ops.
+ */
+static struct gl_fragment_program *
+get_pixel_transfer_program(struct gl_context *ctx, const struct state_key *key)
+{
+ struct st_context *st = st_context(ctx);
+ struct prog_instruction inst[MAX_INST];
+ struct gl_program_parameter_list *params;
+ struct gl_fragment_program *fp;
+ GLuint ic = 0;
+ const GLuint colorTemp = 0;
+
+ fp = (struct gl_fragment_program *)
+ ctx->Driver.NewProgram(ctx, GL_FRAGMENT_PROGRAM_ARB, 0);
+ if (!fp)
+ return NULL;
+
+ params = _mesa_new_parameter_list();
+
+ /*
+ * Get initial pixel color from the texture.
+ * TEX colorTemp, fragment.texcoord[0], texture[0], 2D;
+ */
+ _mesa_init_instructions(inst + ic, 1);
+ inst[ic].Opcode = OPCODE_TEX;
+ inst[ic].DstReg.File = PROGRAM_TEMPORARY;
+ inst[ic].DstReg.Index = colorTemp;
+ inst[ic].SrcReg[0].File = PROGRAM_INPUT;
+ inst[ic].SrcReg[0].Index = FRAG_ATTRIB_TEX0;
+ inst[ic].TexSrcUnit = 0;
+ inst[ic].TexSrcTarget = TEXTURE_2D_INDEX;
+ ic++;
+ fp->Base.InputsRead = (1 << FRAG_ATTRIB_TEX0);
+ fp->Base.OutputsWritten = BITFIELD64_BIT(FRAG_RESULT_COLOR);
+ fp->Base.SamplersUsed = 0x1; /* sampler 0 (bit 0) is used */
+
+ if (key->scaleAndBias) {
+ static const gl_state_index scale_state[STATE_LENGTH] =
+ { STATE_INTERNAL, STATE_PT_SCALE, 0, 0, 0 };
+ static const gl_state_index bias_state[STATE_LENGTH] =
+ { STATE_INTERNAL, STATE_PT_BIAS, 0, 0, 0 };
+ GLint scale_p, bias_p;
+
+ scale_p = _mesa_add_state_reference(params, scale_state);
+ bias_p = _mesa_add_state_reference(params, bias_state);
+
+ /* MAD colorTemp, colorTemp, scale, bias; */
+ _mesa_init_instructions(inst + ic, 1);
+ inst[ic].Opcode = OPCODE_MAD;
+ inst[ic].DstReg.File = PROGRAM_TEMPORARY;
+ inst[ic].DstReg.Index = colorTemp;
+ inst[ic].SrcReg[0].File = PROGRAM_TEMPORARY;
+ inst[ic].SrcReg[0].Index = colorTemp;
+ inst[ic].SrcReg[1].File = PROGRAM_STATE_VAR;
+ inst[ic].SrcReg[1].Index = scale_p;
+ inst[ic].SrcReg[2].File = PROGRAM_STATE_VAR;
+ inst[ic].SrcReg[2].Index = bias_p;
+ ic++;
+ }
+
+ if (key->pixelMaps) {
+ const GLuint temp = 1;
+
+ /* create the colormap/texture now if not already done */
+ if (!st->pixel_xfer.pixelmap_texture) {
+ st->pixel_xfer.pixelmap_texture = create_color_map_texture(ctx);
+ st->pixel_xfer.pixelmap_sampler_view =
+ st_create_texture_sampler_view(st->pipe,
+ st->pixel_xfer.pixelmap_texture);
+ }
+
+ /* with a little effort, we can do four pixel map look-ups with
+ * two TEX instructions:
+ */
+
+ /* TEX temp.rg, colorTemp.rgba, texture[1], 2D; */
+ _mesa_init_instructions(inst + ic, 1);
+ inst[ic].Opcode = OPCODE_TEX;
+ inst[ic].DstReg.File = PROGRAM_TEMPORARY;
+ inst[ic].DstReg.Index = temp;
+ inst[ic].DstReg.WriteMask = WRITEMASK_XY; /* write R,G */
+ inst[ic].SrcReg[0].File = PROGRAM_TEMPORARY;
+ inst[ic].SrcReg[0].Index = colorTemp;
+ inst[ic].TexSrcUnit = 1;
+ inst[ic].TexSrcTarget = TEXTURE_2D_INDEX;
+ ic++;
+
+ /* TEX temp.ba, colorTemp.baba, texture[1], 2D; */
+ _mesa_init_instructions(inst + ic, 1);
+ inst[ic].Opcode = OPCODE_TEX;
+ inst[ic].DstReg.File = PROGRAM_TEMPORARY;
+ inst[ic].DstReg.Index = temp;
+ inst[ic].DstReg.WriteMask = WRITEMASK_ZW; /* write B,A */
+ inst[ic].SrcReg[0].File = PROGRAM_TEMPORARY;
+ inst[ic].SrcReg[0].Index = colorTemp;
+ inst[ic].SrcReg[0].Swizzle = MAKE_SWIZZLE4(SWIZZLE_Z, SWIZZLE_W,
+ SWIZZLE_Z, SWIZZLE_W);
+ inst[ic].TexSrcUnit = 1;
+ inst[ic].TexSrcTarget = TEXTURE_2D_INDEX;
+ ic++;
+
+ /* MOV colorTemp, temp; */
+ _mesa_init_instructions(inst + ic, 1);
+ inst[ic].Opcode = OPCODE_MOV;
+ inst[ic].DstReg.File = PROGRAM_TEMPORARY;
+ inst[ic].DstReg.Index = colorTemp;
+ inst[ic].SrcReg[0].File = PROGRAM_TEMPORARY;
+ inst[ic].SrcReg[0].Index = temp;
+ ic++;
+
+ fp->Base.SamplersUsed |= (1 << 1); /* sampler 1 is used */
+ }
+
+ /* Modify last instruction's dst reg to write to result.color */
+ {
+ struct prog_instruction *last = &inst[ic - 1];
+ last->DstReg.File = PROGRAM_OUTPUT;
+ last->DstReg.Index = FRAG_RESULT_COLOR;
+ }
+
+ /* END; */
+ _mesa_init_instructions(inst + ic, 1);
+ inst[ic].Opcode = OPCODE_END;
+ ic++;
+
+ assert(ic <= MAX_INST);
+
+
+ fp->Base.Instructions = _mesa_alloc_instructions(ic);
+ if (!fp->Base.Instructions) {
+ _mesa_error(ctx, GL_OUT_OF_MEMORY,
+ "generating pixel transfer program");
+ return NULL;
+ }
+
+ _mesa_copy_instructions(fp->Base.Instructions, inst, ic);
+ fp->Base.NumInstructions = ic;
+ fp->Base.Parameters = params;
+
+#if 0
+ printf("========= pixel transfer prog\n");
+ _mesa_print_program(&fp->Base);
+ _mesa_print_parameter_list(fp->Base.Parameters);
+#endif
+
+ return fp;
+}
+
+
+
+/**
+ * Update st->pixel_xfer.program in response to new pixel-transfer state.
+ */
+static void
+update_pixel_transfer(struct st_context *st)
+{
+ struct gl_context *ctx = st->ctx;
+ struct state_key key;
+ struct gl_fragment_program *fp;
+
+ make_state_key(st->ctx, &key);
+
+ fp = (struct gl_fragment_program *)
+ _mesa_search_program_cache(st->pixel_xfer.cache, &key, sizeof(key));
+ if (!fp) {
+ fp = get_pixel_transfer_program(st->ctx, &key);
+ _mesa_program_cache_insert(st->ctx, st->pixel_xfer.cache,
+ &key, sizeof(key), &fp->Base);
+ }
+
+ if (ctx->Pixel.MapColorFlag) {
+ load_color_map_texture(ctx, st->pixel_xfer.pixelmap_texture);
+ }
+ st->pixel_xfer.pixelmap_enabled = ctx->Pixel.MapColorFlag;
+
+ st->pixel_xfer.program = (struct st_fragment_program *) fp;
+}
+
+
+
+const struct st_tracked_state st_update_pixel_transfer = {
+ "st_update_pixel_transfer", /* name */
+ { /* dirty */
+ _NEW_PIXEL, /* mesa */
+ 0, /* st */
+ },
+ update_pixel_transfer /* update */
+};
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