From 4b822a101680532ce6df52904af91194b78a16ba Mon Sep 17 00:00:00 2001 From: Brian Paul Date: Wed, 16 Apr 2008 16:52:12 -0600 Subject: gallium: implement RGBA pixel maps in the pixel transfer fragment program --- src/mesa/state_tracker/st_atom_pixeltransfer.c | 136 ++++++++++++++++++++++++- src/mesa/state_tracker/st_cb_drawpixels.c | 13 ++- src/mesa/state_tracker/st_context.h | 2 + 3 files changed, 146 insertions(+), 5 deletions(-) (limited to 'src') diff --git a/src/mesa/state_tracker/st_atom_pixeltransfer.c b/src/mesa/state_tracker/st_atom_pixeltransfer.c index efb92b7..76356bb 100644 --- a/src/mesa/state_tracker/st_atom_pixeltransfer.c +++ b/src/mesa/state_tracker/st_atom_pixeltransfer.c @@ -42,8 +42,14 @@ #include "shader/prog_print.h" #include "st_context.h" +#include "st_format.h" #include "st_program.h" +#include "st_texture.h" +#include "pipe/p_screen.h" +#include "pipe/p_context.h" +#include "pipe/p_inlines.h" +#include "util/u_pack_color.h" struct state_key @@ -51,6 +57,7 @@ struct state_key GLuint scaleAndBias:1; GLuint colorMatrix:1; GLuint colorMatrixPostScaleBias:1; + GLuint pixelMaps:1; #if 0 GLfloat Maps[3][256][4]; @@ -101,6 +108,69 @@ make_state_key(GLcontext *ctx, struct state_key *key) !TEST_EQ_4V(ctx->Pixel.PostColorMatrixBias, zero)) { key->colorMatrixPostScaleBias = 1; } + + key->pixelMaps = ctx->Pixel.MapColorFlag; +} + + +static struct pipe_texture * +create_color_map_texture(GLcontext *ctx) +{ + struct pipe_context *pipe = ctx->st->pipe; + struct pipe_texture *pt; + enum pipe_format format; + const uint texSize = 256; /* simple, and usually perfect */ + + /* find an RGBA texture format */ + format = st_choose_format(pipe, GL_RGBA, PIPE_TEXTURE); + + /* create texture for color map/table */ + pt = st_texture_create(ctx->st, PIPE_TEXTURE_2D, format, 0, + texSize, texSize, 1, 0); + return pt; +} + + +/** + * Update the pixelmap texture with the contents of the R/G/B/A pixel maps. + */ +static void +load_color_map_texture(GLcontext *ctx, struct pipe_texture *pt) +{ + struct pipe_context *pipe = ctx->st->pipe; + struct pipe_screen *screen = pipe->screen; + struct pipe_surface *surface; + 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->width[0]; + uint *dest; + uint i, j; + + surface = screen->get_tex_surface(screen, pt, 0, 0, 0); + dest = (uint *) pipe_surface_map(surface); + + /* 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++) { + 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, dest + k); + } + } + + pipe_surface_unmap(surface); + pipe_surface_reference(&surface, NULL); + pipe->texture_update(pipe, pt, 0, 0x1); } @@ -113,6 +183,7 @@ make_state_key(GLcontext *ctx, struct state_key *key) static struct gl_fragment_program * get_pixel_transfer_program(GLcontext *ctx, const struct state_key *key) { + struct st_context *st = ctx->st; struct prog_instruction inst[MAX_INST]; struct gl_program_parameter_list *params; struct gl_fragment_program *fp; @@ -126,7 +197,10 @@ get_pixel_transfer_program(GLcontext *ctx, const struct state_key *key) params = _mesa_new_parameter_list(); - /* TEX colorTemp, fragment.texcoord[0], texture[0], 2D; */ + /* + * 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; @@ -140,7 +214,6 @@ get_pixel_transfer_program(GLcontext *ctx, const struct state_key *key) fp->Base.OutputsWritten = (1 << FRAG_RESULT_COLR); fp->Base.SamplersUsed = 0x1; /* sampler 0 (bit 0) is used */ - /* MAD colorTemp, colorTemp, scale, bias; */ if (key->scaleAndBias) { static const gl_state_index scale_state[STATE_LENGTH] = { STATE_INTERNAL, STATE_PT_SCALE, 0, 0, 0 }; @@ -161,6 +234,7 @@ get_pixel_transfer_program(GLcontext *ctx, const struct state_key *key) 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; @@ -174,6 +248,56 @@ get_pixel_transfer_program(GLcontext *ctx, const struct state_key *key) 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); + } + + /* 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 */ + } + if (key->colorMatrix) { static const gl_state_index row0_state[STATE_LENGTH] = { STATE_COLOR_MATRIX, 0, 0, 0, 0 }; @@ -190,8 +314,6 @@ get_pixel_transfer_program(GLcontext *ctx, const struct state_key *key) GLint row3_p = _mesa_add_state_reference(params, row3_state); const GLuint temp = 1; - /* XXX reimplement in terms of MUL/MAD (see t_vp_build.c) */ - /* DP4 temp.x, colorTemp, matrow0; */ _mesa_init_instructions(inst + ic, 1); inst[ic].Opcode = OPCODE_DP4; @@ -316,6 +438,7 @@ get_pixel_transfer_program(GLcontext *ctx, const struct state_key *key) static void update_pixel_transfer(struct st_context *st) { + GLcontext *ctx = st->ctx; struct state_key key; struct gl_fragment_program *fp; @@ -329,6 +452,11 @@ update_pixel_transfer(struct st_context *st) &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; } diff --git a/src/mesa/state_tracker/st_cb_drawpixels.c b/src/mesa/state_tracker/st_cb_drawpixels.c index 5f8c90c..67f468c 100644 --- a/src/mesa/state_tracker/st_cb_drawpixels.c +++ b/src/mesa/state_tracker/st_cb_drawpixels.c @@ -562,6 +562,9 @@ draw_textured_quad(GLcontext *ctx, GLint x, GLint y, GLfloat z, sampler.normalized_coords = 1; cso_single_sampler(cso, 0, &sampler); + if (st->pixel_xfer.pixelmap_enabled) { + cso_single_sampler(cso, 1, &sampler); + } cso_single_sampler_done(cso); } @@ -582,7 +585,15 @@ draw_textured_quad(GLcontext *ctx, GLint x, GLint y, GLfloat z, } /* texture state: */ - pipe->set_sampler_textures(pipe, 1, &pt); + if (st->pixel_xfer.pixelmap_enabled) { + struct pipe_texture *textures[2]; + textures[0] = pt; + textures[1] = st->pixel_xfer.pixelmap_texture; + pipe->set_sampler_textures(pipe, 2, textures); + } + else { + pipe->set_sampler_textures(pipe, 1, &pt); + } /* Compute window coords (y=0=bottom) with pixel zoom. * Recall that these coords are transformed by the current diff --git a/src/mesa/state_tracker/st_context.h b/src/mesa/state_tracker/st_context.h index d89e54c..ae1ba41 100644 --- a/src/mesa/state_tracker/st_context.h +++ b/src/mesa/state_tracker/st_context.h @@ -138,6 +138,8 @@ struct st_context GLuint user_prog_sn; /**< user fragment program serial no. */ struct st_fragment_program *combined_prog; GLuint combined_prog_sn; + struct pipe_texture *pixelmap_texture; + boolean pixelmap_enabled; /**< use the pixelmap texture? */ } pixel_xfer; /** for glBitmap */ -- cgit v1.1