0,0 → 1,354 |
/************************************************************************** |
* |
* 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, 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(st_context(ctx)->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 = (1 << 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 }; |
GLfloat scale[4], bias[4]; |
GLint scale_p, bias_p; |
|
scale[0] = ctx->Pixel.RedScale; |
scale[1] = ctx->Pixel.GreenScale; |
scale[2] = ctx->Pixel.BlueScale; |
scale[3] = ctx->Pixel.AlphaScale; |
bias[0] = ctx->Pixel.RedBias; |
bias[1] = ctx->Pixel.GreenBias; |
bias[2] = ctx->Pixel.BlueBias; |
bias[3] = ctx->Pixel.AlphaBias; |
|
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 */ |
}; |