1 /**************************************************************************
3 * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26 **************************************************************************/
33 #include "main/imports.h"
34 #include "main/image.h"
35 #include "main/bufferobj.h"
36 #include "main/macros.h"
37 #include "main/texformat.h"
38 #include "main/texstore.h"
39 #include "shader/program.h"
40 #include "shader/prog_print.h"
43 #include "st_context.h"
45 #include "st_atom_constbuf.h"
46 #include "st_program.h"
47 #include "st_cb_drawpixels.h"
48 #include "st_cb_readpixels.h"
49 #include "st_cb_fbo.h"
50 #include "st_format.h"
51 #include "st_texture.h"
52 #include "st_inlines.h"
54 #include "pipe/p_context.h"
55 #include "pipe/p_defines.h"
56 #include "util/u_inlines.h"
57 #include "tgsi/tgsi_ureg.h"
58 #include "util/u_tile.h"
59 #include "util/u_draw_quad.h"
60 #include "util/u_format.h"
61 #include "util/u_math.h"
62 #include "shader/prog_instruction.h"
63 #include "cso_cache/cso_context.h"
67 * Check if the given program is:
68 * 0: MOVE result.color, fragment.color;
72 is_passthrough_program(const struct gl_fragment_program *prog)
74 if (prog->Base.NumInstructions == 2) {
75 const struct prog_instruction *inst = prog->Base.Instructions;
76 if (inst[0].Opcode == OPCODE_MOV &&
77 inst[1].Opcode == OPCODE_END &&
78 inst[0].DstReg.File == PROGRAM_OUTPUT &&
79 inst[0].DstReg.Index == FRAG_RESULT_COLOR &&
80 inst[0].DstReg.WriteMask == WRITEMASK_XYZW &&
81 inst[0].SrcReg[0].File == PROGRAM_INPUT &&
82 inst[0].SrcReg[0].Index == FRAG_ATTRIB_COL0 &&
83 inst[0].SrcReg[0].Swizzle == SWIZZLE_XYZW) {
93 * Make fragment shader for glDraw/CopyPixels. This shader is made
94 * by combining the pixel transfer shader with the user-defined shader.
95 * \return pointer to Gallium driver fragment shader
98 combined_drawpix_fragment_program(GLcontext *ctx)
100 struct st_context *st = st_context(ctx);
101 struct st_fragment_program *stfp;
103 if (st->pixel_xfer.program->serialNo == st->pixel_xfer.xfer_prog_sn
104 && st->fp->serialNo == st->pixel_xfer.user_prog_sn) {
105 /* the pixel tranfer program has not changed and the user-defined
106 * program has not changed, so re-use the combined program.
108 stfp = st->pixel_xfer.combined_prog;
111 /* Concatenate the pixel transfer program with the current user-
114 if (is_passthrough_program(&st->fp->Base)) {
115 stfp = (struct st_fragment_program *)
116 _mesa_clone_fragment_program(ctx, &st->pixel_xfer.program->Base);
120 printf("Base program:\n");
121 _mesa_print_program(&st->fp->Base.Base);
122 printf("DrawPix program:\n");
123 _mesa_print_program(&st->pixel_xfer.program->Base.Base);
125 stfp = (struct st_fragment_program *)
126 _mesa_combine_programs(ctx,
127 &st->pixel_xfer.program->Base.Base,
133 struct gl_program *p = &stfp->Base.Base;
134 printf("Combined DrawPixels program:\n");
135 _mesa_print_program(p);
136 printf("InputsRead: 0x%x\n", p->InputsRead);
137 printf("OutputsWritten: 0x%x\n", p->OutputsWritten);
138 _mesa_print_parameter_list(p->Parameters);
142 /* translate to TGSI tokens */
143 st_translate_fragment_program(st, stfp);
145 /* save new program, update serial numbers */
146 st->pixel_xfer.xfer_prog_sn = st->pixel_xfer.program->serialNo;
147 st->pixel_xfer.user_prog_sn = st->fp->serialNo;
148 st->pixel_xfer.combined_prog_sn = stfp->serialNo;
149 /* can't reference new program directly, already have a reference on it */
150 st_reference_fragprog(st, &st->pixel_xfer.combined_prog, NULL);
151 st->pixel_xfer.combined_prog = stfp;
154 /* Ideally we'd have updated the pipe constants during the normal
155 * st/atom mechanism. But we can't since this is specific to glDrawPixels.
157 st_upload_constants(st, stfp->Base.Base.Parameters, PIPE_SHADER_FRAGMENT);
159 return stfp->driver_shader;
164 * Create fragment shader that does a TEX() instruction to get a Z
165 * value, then writes to FRAG_RESULT_DEPTH.
166 * Pass fragment color through as-is.
167 * \return pointer to the Gallium driver fragment shader
170 make_fragment_shader_z(struct st_context *st)
172 GLcontext *ctx = st->ctx;
173 struct gl_program *p;
176 if (st->drawpix.z_shader) {
177 return st->drawpix.z_shader->driver_shader;
183 p = ctx->Driver.NewProgram(ctx, GL_FRAGMENT_PROGRAM_ARB, 0);
187 p->NumInstructions = 3;
189 p->Instructions = _mesa_alloc_instructions(p->NumInstructions);
190 if (!p->Instructions) {
191 ctx->Driver.DeleteProgram(ctx, p);
194 _mesa_init_instructions(p->Instructions, p->NumInstructions);
196 /* TEX result.depth, fragment.texcoord[0], texture[0], 2D; */
197 p->Instructions[ic].Opcode = OPCODE_TEX;
198 p->Instructions[ic].DstReg.File = PROGRAM_OUTPUT;
199 p->Instructions[ic].DstReg.Index = FRAG_RESULT_DEPTH;
200 p->Instructions[ic].DstReg.WriteMask = WRITEMASK_Z;
201 p->Instructions[ic].SrcReg[0].File = PROGRAM_INPUT;
202 p->Instructions[ic].SrcReg[0].Index = FRAG_ATTRIB_TEX0;
203 p->Instructions[ic].TexSrcUnit = 0;
204 p->Instructions[ic].TexSrcTarget = TEXTURE_2D_INDEX;
207 /* MOV result.color, fragment.color */
208 p->Instructions[ic].Opcode = OPCODE_MOV;
209 p->Instructions[ic].DstReg.File = PROGRAM_OUTPUT;
210 p->Instructions[ic].DstReg.Index = FRAG_RESULT_COLOR;
211 p->Instructions[ic].SrcReg[0].File = PROGRAM_INPUT;
212 p->Instructions[ic].SrcReg[0].Index = FRAG_ATTRIB_COL0;
216 p->Instructions[ic++].Opcode = OPCODE_END;
218 assert(ic == p->NumInstructions);
220 p->InputsRead = FRAG_BIT_TEX0 | FRAG_BIT_COL0;
221 p->OutputsWritten = (1 << FRAG_RESULT_COLOR) | (1 << FRAG_RESULT_DEPTH);
222 p->SamplersUsed = 0x1; /* sampler 0 (bit 0) is used */
224 st->drawpix.z_shader = (struct st_fragment_program *) p;
225 st_translate_fragment_program(st, st->drawpix.z_shader);
227 return st->drawpix.z_shader->driver_shader;
233 * Create a simple vertex shader that just passes through the
234 * vertex position and texcoord (and optionally, color).
237 make_passthrough_vertex_shader(struct st_context *st,
240 if (!st->drawpix.vert_shaders[passColor]) {
241 struct ureg_program *ureg =
242 ureg_create( TGSI_PROCESSOR_VERTEX );
247 /* MOV result.pos, vertex.pos; */
249 ureg_DECL_output( ureg, TGSI_SEMANTIC_POSITION, 0 ),
250 ureg_DECL_vs_input( ureg, 0 ));
252 /* MOV result.texcoord0, vertex.attr[1]; */
254 ureg_DECL_output( ureg, TGSI_SEMANTIC_GENERIC, 0 ),
255 ureg_DECL_vs_input( ureg, 1 ));
258 /* MOV result.color0, vertex.attr[2]; */
260 ureg_DECL_output( ureg, TGSI_SEMANTIC_COLOR, 0 ),
261 ureg_DECL_vs_input( ureg, 2 ));
266 st->drawpix.vert_shaders[passColor] =
267 ureg_create_shader_and_destroy( ureg, st->pipe );
270 return st->drawpix.vert_shaders[passColor];
275 * Return a texture internalFormat for drawing/copying an image
279 base_format(GLenum format)
282 case GL_DEPTH_COMPONENT:
283 return GL_DEPTH_COMPONENT;
284 case GL_DEPTH_STENCIL:
285 return GL_DEPTH_STENCIL;
286 case GL_STENCIL_INDEX:
287 return GL_STENCIL_INDEX;
295 * Create a temporary texture to hold an image of the given size.
296 * If width, height are not POT and the driver only handles POT textures,
297 * allocate the next larger size of texture that is POT.
299 static struct pipe_resource *
300 alloc_texture(struct st_context *st, GLsizei width, GLsizei height,
301 enum pipe_format texFormat)
303 struct pipe_context *pipe = st->pipe;
304 struct pipe_screen *screen = pipe->screen;
305 struct pipe_resource *pt;
311 /* Need to use POT texture? */
312 if (!screen->get_param(screen, PIPE_CAP_NPOT_TEXTURES)) {
315 l2pt = util_logbase2(width);
316 if (1 << l2pt != width) {
317 ptw = 1 << (l2pt + 1);
320 l2pt = util_logbase2(height);
321 if (1 << l2pt != height) {
322 pth = 1 << (l2pt + 1);
325 /* Check against maximum texture size */
326 maxSize = 1 << (pipe->screen->get_param(pipe->screen,
327 PIPE_CAP_MAX_TEXTURE_2D_LEVELS) - 1);
328 assert(ptw <= maxSize);
329 assert(pth <= maxSize);
332 pt = st_texture_create(st, PIPE_TEXTURE_2D, texFormat, 0,
333 ptw, pth, 1, PIPE_BIND_SAMPLER_VIEW);
340 * Make texture containing an image for glDrawPixels image.
341 * If 'pixels' is NULL, leave the texture image data undefined.
343 static struct pipe_resource *
344 make_texture(struct st_context *st,
345 GLsizei width, GLsizei height, GLenum format, GLenum type,
346 const struct gl_pixelstore_attrib *unpack,
347 const GLvoid *pixels)
349 GLcontext *ctx = st->ctx;
350 struct pipe_context *pipe = st->pipe;
352 struct pipe_resource *pt;
353 enum pipe_format pipeFormat;
357 baseFormat = base_format(format);
359 mformat = st_ChooseTextureFormat(ctx, baseFormat, format, type);
362 pipeFormat = st_mesa_format_to_pipe_format(mformat);
364 cpp = util_format_get_blocksize(pipeFormat);
366 pixels = _mesa_map_pbo_source(ctx, unpack, pixels);
370 /* alloc temporary texture */
371 pt = alloc_texture(st, width, height, pipeFormat);
373 _mesa_unmap_pbo_source(ctx, unpack);
378 struct pipe_transfer *transfer;
379 static const GLuint dstImageOffsets = 0;
382 const GLbitfield imageTransferStateSave = ctx->_ImageTransferState;
384 /* we'll do pixel transfer in a fragment shader */
385 ctx->_ImageTransferState = 0x0;
387 transfer = st_no_flush_get_tex_transfer(st, pt, 0, 0, 0,
388 PIPE_TRANSFER_WRITE, 0, 0,
391 /* map texture transfer */
392 dest = pipe_transfer_map(pipe, transfer);
395 /* Put image into texture transfer.
396 * Note that the image is actually going to be upside down in
397 * the texture. We deal with that with texcoords.
399 success = _mesa_texstore(ctx, 2, /* dims */
400 baseFormat, /* baseInternalFormat */
401 mformat, /* gl_format */
403 0, 0, 0, /* dstX/Y/Zoffset */
404 transfer->stride, /* dstRowStride, bytes */
405 &dstImageOffsets, /* dstImageOffsets */
406 width, height, 1, /* size */
407 format, type, /* src format/type */
408 pixels, /* data source */
412 pipe_transfer_unmap(pipe, transfer);
413 pipe->transfer_destroy(pipe, transfer);
418 ctx->_ImageTransferState = imageTransferStateSave;
421 _mesa_unmap_pbo_source(ctx, unpack);
428 * Draw quad with texcoords and optional color.
429 * Coords are gallium window coords with y=0=top.
430 * \param color may be null
431 * \param invertTex if true, flip texcoords vertically
434 draw_quad(GLcontext *ctx, GLfloat x0, GLfloat y0, GLfloat z,
435 GLfloat x1, GLfloat y1, const GLfloat *color,
436 GLboolean invertTex, GLfloat maxXcoord, GLfloat maxYcoord)
438 struct st_context *st = st_context(ctx);
439 struct pipe_context *pipe = st->pipe;
440 GLfloat verts[4][3][4]; /* four verts, three attribs, XYZW */
442 /* setup vertex data */
444 const struct gl_framebuffer *fb = st->ctx->DrawBuffer;
445 const GLfloat fb_width = (GLfloat) fb->Width;
446 const GLfloat fb_height = (GLfloat) fb->Height;
447 const GLfloat clip_x0 = x0 / fb_width * 2.0f - 1.0f;
448 const GLfloat clip_y0 = y0 / fb_height * 2.0f - 1.0f;
449 const GLfloat clip_x1 = x1 / fb_width * 2.0f - 1.0f;
450 const GLfloat clip_y1 = y1 / fb_height * 2.0f - 1.0f;
451 const GLfloat sLeft = 0.0f, sRight = maxXcoord;
452 const GLfloat tTop = invertTex ? maxYcoord : 0.0f;
453 const GLfloat tBot = invertTex ? 0.0f : maxYcoord;
457 verts[0][0][0] = clip_x0; /* v[0].attr[0].x */
458 verts[0][0][1] = clip_y0; /* v[0].attr[0].y */
461 verts[1][0][0] = clip_x1;
462 verts[1][0][1] = clip_y0;
465 verts[2][0][0] = clip_x1;
466 verts[2][0][1] = clip_y1;
469 verts[3][0][0] = clip_x0;
470 verts[3][0][1] = clip_y1;
472 verts[0][1][0] = sLeft; /* v[0].attr[1].S */
473 verts[0][1][1] = tTop; /* v[0].attr[1].T */
474 verts[1][1][0] = sRight;
475 verts[1][1][1] = tTop;
476 verts[2][1][0] = sRight;
477 verts[2][1][1] = tBot;
478 verts[3][1][0] = sLeft;
479 verts[3][1][1] = tBot;
481 /* same for all verts: */
483 for (i = 0; i < 4; i++) {
484 verts[i][0][2] = z; /* v[i].attr[0].z */
485 verts[i][0][3] = 1.0f; /* v[i].attr[0].w */
486 verts[i][2][0] = color[0]; /* v[i].attr[2].r */
487 verts[i][2][1] = color[1]; /* v[i].attr[2].g */
488 verts[i][2][2] = color[2]; /* v[i].attr[2].b */
489 verts[i][2][3] = color[3]; /* v[i].attr[2].a */
490 verts[i][1][2] = 0.0f; /* v[i].attr[1].R */
491 verts[i][1][3] = 1.0f; /* v[i].attr[1].Q */
495 for (i = 0; i < 4; i++) {
496 verts[i][0][2] = z; /*Z*/
497 verts[i][0][3] = 1.0f; /*W*/
498 verts[i][1][2] = 0.0f; /*R*/
499 verts[i][1][3] = 1.0f; /*Q*/
505 struct pipe_resource *buf;
507 /* allocate/load buffer object with vertex data */
508 buf = pipe_buffer_create(pipe->screen,
509 PIPE_BIND_VERTEX_BUFFER,
511 st_no_flush_pipe_buffer_write(st, buf, 0, sizeof(verts), verts);
513 util_draw_vertex_buffer(pipe, buf, 0,
516 3); /* attribs/vert */
517 pipe_resource_reference(&buf, NULL);
524 draw_textured_quad(GLcontext *ctx, GLint x, GLint y, GLfloat z,
525 GLsizei width, GLsizei height,
526 GLfloat zoomX, GLfloat zoomY,
527 struct pipe_sampler_view *sv,
530 const GLfloat *color,
533 struct st_context *st = st_context(ctx);
534 struct pipe_context *pipe = st->pipe;
535 struct cso_context *cso = st->cso_context;
536 GLfloat x0, y0, x1, y1;
540 /* XXX if DrawPixels image is larger than max texture size, break
543 maxSize = 1 << (pipe->screen->get_param(pipe->screen, PIPE_CAP_MAX_TEXTURE_2D_LEVELS) - 1);
544 assert(width <= maxSize);
545 assert(height <= maxSize);
547 cso_save_rasterizer(cso);
548 cso_save_viewport(cso);
549 cso_save_samplers(cso);
550 cso_save_fragment_sampler_views(cso);
551 cso_save_fragment_shader(cso);
552 cso_save_vertex_shader(cso);
553 cso_save_vertex_elements(cso);
555 /* rasterizer state: just scissor */
557 struct pipe_rasterizer_state rasterizer;
558 memset(&rasterizer, 0, sizeof(rasterizer));
559 rasterizer.gl_rasterization_rules = 1;
560 rasterizer.scissor = ctx->Scissor.Enabled;
561 cso_set_rasterizer(cso, &rasterizer);
564 /* fragment shader state: TEX lookup program */
565 cso_set_fragment_shader_handle(cso, driver_fp);
567 /* vertex shader state: position + texcoord pass-through */
568 cso_set_vertex_shader_handle(cso, driver_vp);
571 /* texture sampling state: */
573 struct pipe_sampler_state sampler;
574 memset(&sampler, 0, sizeof(sampler));
575 sampler.wrap_s = PIPE_TEX_WRAP_CLAMP;
576 sampler.wrap_t = PIPE_TEX_WRAP_CLAMP;
577 sampler.wrap_r = PIPE_TEX_WRAP_CLAMP;
578 sampler.min_img_filter = PIPE_TEX_FILTER_NEAREST;
579 sampler.min_mip_filter = PIPE_TEX_MIPFILTER_NONE;
580 sampler.mag_img_filter = PIPE_TEX_FILTER_NEAREST;
581 sampler.normalized_coords = 1;
583 cso_single_sampler(cso, 0, &sampler);
584 if (st->pixel_xfer.pixelmap_enabled) {
585 cso_single_sampler(cso, 1, &sampler);
587 cso_single_sampler_done(cso);
590 /* viewport state: viewport matching window dims */
592 const float w = (float) ctx->DrawBuffer->Width;
593 const float h = (float) ctx->DrawBuffer->Height;
594 struct pipe_viewport_state vp;
595 vp.scale[0] = 0.5f * w;
596 vp.scale[1] = -0.5f * h;
599 vp.translate[0] = 0.5f * w;
600 vp.translate[1] = 0.5f * h;
601 vp.translate[2] = 0.5f;
602 vp.translate[3] = 0.0f;
603 cso_set_viewport(cso, &vp);
606 cso_set_vertex_elements(cso, 3, st->velems_util_draw);
609 if (st->pixel_xfer.pixelmap_enabled) {
610 struct pipe_sampler_view *sampler_views[2];
611 sampler_views[0] = sv;
612 sampler_views[1] = st->pixel_xfer.pixelmap_sampler_view;
613 cso_set_fragment_sampler_views(cso, 2, sampler_views);
616 cso_set_fragment_sampler_views(cso, 1, &sv);
619 /* Compute Gallium window coords (y=0=top) with pixel zoom.
620 * Recall that these coords are transformed by the current
621 * vertex shader and viewport transformation.
623 if (st_fb_orientation(ctx->DrawBuffer) == Y_0_BOTTOM) {
624 y = ctx->DrawBuffer->Height - (int) (y + height * ctx->Pixel.ZoomY);
625 invertTex = !invertTex;
629 x1 = x + width * ctx->Pixel.ZoomX;
631 y1 = y + height * ctx->Pixel.ZoomY;
633 /* convert Z from [0,1] to [-1,-1] to match viewport Z scale/bias */
636 draw_quad(ctx, x0, y0, z, x1, y1, color, invertTex,
637 (GLfloat) width / sv->texture->width0,
638 (GLfloat) height / sv->texture->height0);
641 cso_restore_rasterizer(cso);
642 cso_restore_viewport(cso);
643 cso_restore_samplers(cso);
644 cso_restore_fragment_sampler_views(cso);
645 cso_restore_fragment_shader(cso);
646 cso_restore_vertex_shader(cso);
647 cso_restore_vertex_elements(cso);
652 draw_stencil_pixels(GLcontext *ctx, GLint x, GLint y,
653 GLsizei width, GLsizei height, GLenum format, GLenum type,
654 const struct gl_pixelstore_attrib *unpack,
655 const GLvoid *pixels)
657 struct st_context *st = st_context(ctx);
658 struct pipe_context *pipe = st->pipe;
659 struct st_renderbuffer *strb;
660 enum pipe_transfer_usage usage;
661 struct pipe_transfer *pt;
662 const GLboolean zoom = ctx->Pixel.ZoomX != 1.0 || ctx->Pixel.ZoomY != 1.0;
665 struct gl_pixelstore_attrib clippedUnpack = *unpack;
668 if (!_mesa_clip_drawpixels(ctx, &x, &y, &width, &height,
670 /* totally clipped */
675 strb = st_renderbuffer(ctx->DrawBuffer->
676 Attachment[BUFFER_STENCIL].Renderbuffer);
678 if (st_fb_orientation(ctx->DrawBuffer) == Y_0_TOP) {
679 y = ctx->DrawBuffer->Height - y - height;
682 if(format != GL_DEPTH_STENCIL &&
683 util_format_get_component_bits(strb->format, UTIL_FORMAT_COLORSPACE_ZS, 0) != 0)
684 usage = PIPE_TRANSFER_READ_WRITE;
686 usage = PIPE_TRANSFER_WRITE;
688 pt = st_cond_flush_get_tex_transfer(st_context(ctx), strb->texture, 0, 0, 0,
692 stmap = pipe_transfer_map(pipe, pt);
694 pixels = _mesa_map_pbo_source(ctx, &clippedUnpack, pixels);
697 /* if width > MAX_WIDTH, have to process image in chunks */
699 while (skipPixels < width) {
700 const GLint spanX = skipPixels;
701 const GLint spanWidth = MIN2(width - skipPixels, MAX_WIDTH);
703 for (row = 0; row < height; row++) {
704 GLubyte sValues[MAX_WIDTH];
705 GLuint zValues[MAX_WIDTH];
706 GLenum destType = GL_UNSIGNED_BYTE;
707 const GLvoid *source = _mesa_image_address2d(&clippedUnpack, pixels,
711 _mesa_unpack_stencil_span(ctx, spanWidth, destType, sValues,
712 type, source, &clippedUnpack,
713 ctx->_ImageTransferState);
715 if (format == GL_DEPTH_STENCIL) {
716 _mesa_unpack_depth_span(ctx, spanWidth, GL_UNSIGNED_INT, zValues,
717 (1 << 24) - 1, type, source,
722 _mesa_problem(ctx, "Gallium glDrawPixels(GL_STENCIL) with "
723 "zoom not complete");
729 if (st_fb_orientation(ctx->DrawBuffer) == Y_0_TOP) {
730 spanY = height - row - 1;
736 /* now pack the stencil (and Z) values in the dest format */
737 switch (pt->resource->format) {
738 case PIPE_FORMAT_S8_USCALED:
740 ubyte *dest = stmap + spanY * pt->stride + spanX;
741 assert(usage == PIPE_TRANSFER_WRITE);
742 memcpy(dest, sValues, spanWidth);
745 case PIPE_FORMAT_Z24_UNORM_S8_USCALED:
746 if (format == GL_DEPTH_STENCIL) {
747 uint *dest = (uint *) (stmap + spanY * pt->stride + spanX*4);
749 assert(usage == PIPE_TRANSFER_WRITE);
750 for (k = 0; k < spanWidth; k++) {
751 dest[k] = zValues[k] | (sValues[k] << 24);
755 uint *dest = (uint *) (stmap + spanY * pt->stride + spanX*4);
757 assert(usage == PIPE_TRANSFER_READ_WRITE);
758 for (k = 0; k < spanWidth; k++) {
759 dest[k] = (dest[k] & 0xffffff) | (sValues[k] << 24);
763 case PIPE_FORMAT_S8_USCALED_Z24_UNORM:
764 if (format == GL_DEPTH_STENCIL) {
765 uint *dest = (uint *) (stmap + spanY * pt->stride + spanX*4);
767 assert(usage == PIPE_TRANSFER_WRITE);
768 for (k = 0; k < spanWidth; k++) {
769 dest[k] = (zValues[k] << 8) | (sValues[k] & 0xff);
773 uint *dest = (uint *) (stmap + spanY * pt->stride + spanX*4);
775 assert(usage == PIPE_TRANSFER_READ_WRITE);
776 for (k = 0; k < spanWidth; k++) {
777 dest[k] = (dest[k] & 0xffffff00) | (sValues[k] & 0xff);
786 skipPixels += spanWidth;
789 _mesa_unmap_pbo_source(ctx, &clippedUnpack);
791 /* unmap the stencil buffer */
792 pipe_transfer_unmap(pipe, pt);
793 pipe->transfer_destroy(pipe, pt);
798 * Called via ctx->Driver.DrawPixels()
801 st_DrawPixels(GLcontext *ctx, GLint x, GLint y, GLsizei width, GLsizei height,
802 GLenum format, GLenum type,
803 const struct gl_pixelstore_attrib *unpack, const GLvoid *pixels)
805 void *driver_vp, *driver_fp;
806 struct st_context *st = st_context(ctx);
807 const GLfloat *color;
809 if (format == GL_STENCIL_INDEX ||
810 format == GL_DEPTH_STENCIL) {
811 draw_stencil_pixels(ctx, x, y, width, height, format, type,
816 /* Mesa state should be up to date by now */
817 assert(ctx->NewState == 0x0);
819 st_validate_state(st);
821 if (format == GL_DEPTH_COMPONENT) {
822 driver_fp = make_fragment_shader_z(st);
823 driver_vp = make_passthrough_vertex_shader(st, GL_TRUE);
824 color = ctx->Current.RasterColor;
827 driver_fp = combined_drawpix_fragment_program(ctx);
828 driver_vp = make_passthrough_vertex_shader(st, GL_FALSE);
832 /* draw with textured quad */
834 struct pipe_resource *pt
835 = make_texture(st, width, height, format, type, unpack, pixels);
837 struct pipe_sampler_view *sv = st_sampler_view_from_texture(st->pipe, pt);
840 draw_textured_quad(ctx, x, y, ctx->Current.RasterPos[2],
841 width, height, ctx->Pixel.ZoomX, ctx->Pixel.ZoomY,
846 pipe_sampler_view_reference(&sv, NULL);
848 pipe_resource_reference(&pt, NULL);
856 copy_stencil_pixels(GLcontext *ctx, GLint srcx, GLint srcy,
857 GLsizei width, GLsizei height,
858 GLint dstx, GLint dsty)
860 struct st_renderbuffer *rbDraw = st_renderbuffer(ctx->DrawBuffer->_StencilBuffer);
861 struct pipe_context *pipe = ctx->st->pipe;
862 enum pipe_transfer_usage usage;
863 struct pipe_transfer *ptDraw;
868 buffer = malloc(width * height * sizeof(ubyte));
870 _mesa_error(ctx, GL_OUT_OF_MEMORY, "glCopyPixels(stencil)");
874 /* this will do stencil pixel transfer ops */
875 st_read_stencil_pixels(ctx, srcx, srcy, width, height,
876 GL_STENCIL_INDEX, GL_UNSIGNED_BYTE,
877 &ctx->DefaultPacking, buffer);
879 if(util_format_get_component_bits(rbDraw->format, UTIL_FORMAT_COLORSPACE_ZS, 0) != 0)
880 usage = PIPE_TRANSFER_READ_WRITE;
882 usage = PIPE_TRANSFER_WRITE;
884 if (st_fb_orientation(ctx->DrawBuffer) == Y_0_TOP) {
885 dsty = rbDraw->Base.Height - dsty - height;
888 ptDraw = st_cond_flush_get_tex_transfer(st_context(ctx),
889 rbDraw->texture, 0, 0, 0,
893 assert(util_format_get_blockwidth(ptDraw->resource->format) == 1);
894 assert(util_format_get_blockheight(ptDraw->resource->format) == 1);
896 /* map the stencil buffer */
897 drawMap = pipe_transfer_map(pipe, ptDraw);
900 /* XXX PixelZoom not handled yet */
901 for (i = 0; i < height; i++) {
908 if (st_fb_orientation(ctx->DrawBuffer) == Y_0_TOP) {
912 dst = drawMap + y * ptDraw->stride;
913 src = buffer + i * width;
915 switch (ptDraw->resource->format) {
916 case PIPE_FORMAT_Z24_UNORM_S8_USCALED:
918 uint *dst4 = (uint *) dst;
920 assert(usage == PIPE_TRANSFER_READ_WRITE);
921 for (j = 0; j < width; j++) {
922 *dst4 = (*dst4 & 0xffffff) | (src[j] << 24);
927 case PIPE_FORMAT_S8_USCALED_Z24_UNORM:
929 uint *dst4 = (uint *) dst;
931 assert(usage == PIPE_TRANSFER_READ_WRITE);
932 for (j = 0; j < width; j++) {
933 *dst4 = (*dst4 & 0xffffff00) | (src[j] & 0xff);
938 case PIPE_FORMAT_S8_USCALED:
939 assert(usage == PIPE_TRANSFER_WRITE);
940 memcpy(dst, src, width);
949 /* unmap the stencil buffer */
950 pipe_transfer_unmap(pipe, ptDraw);
951 pipe->transfer_destroy(pipe, ptDraw);
956 st_CopyPixels(GLcontext *ctx, GLint srcx, GLint srcy,
957 GLsizei width, GLsizei height,
958 GLint dstx, GLint dsty, GLenum type)
960 struct st_context *st = st_context(ctx);
961 struct pipe_context *pipe = st->pipe;
962 struct pipe_screen *screen = pipe->screen;
963 struct st_renderbuffer *rbRead;
964 void *driver_vp, *driver_fp;
965 struct pipe_resource *pt;
966 struct pipe_sampler_view *sv;
968 enum pipe_format srcFormat, texFormat;
969 GLboolean invertTex = GL_FALSE;
970 GLint readX, readY, readW, readH;
971 struct gl_pixelstore_attrib pack = ctx->DefaultPacking;
973 pipe->flush(pipe, PIPE_FLUSH_RENDER_CACHE, NULL);
975 st_validate_state(st);
977 if (type == GL_STENCIL) {
978 /* can't use texturing to do stencil */
979 copy_stencil_pixels(ctx, srcx, srcy, width, height, dstx, dsty);
983 if (type == GL_COLOR) {
984 rbRead = st_get_color_read_renderbuffer(ctx);
986 driver_fp = combined_drawpix_fragment_program(ctx);
987 driver_vp = make_passthrough_vertex_shader(st, GL_FALSE);
990 assert(type == GL_DEPTH);
991 rbRead = st_renderbuffer(ctx->ReadBuffer->_DepthBuffer);
992 color = ctx->Current.Attrib[VERT_ATTRIB_COLOR0];
993 driver_fp = make_fragment_shader_z(st);
994 driver_vp = make_passthrough_vertex_shader(st, GL_TRUE);
997 srcFormat = rbRead->texture->format;
999 if (screen->is_format_supported(screen, srcFormat, PIPE_TEXTURE_2D,
1000 PIPE_BIND_SAMPLER_VIEW, 0)) {
1001 texFormat = srcFormat;
1004 /* srcFormat can't be used as a texture format */
1005 if (type == GL_DEPTH) {
1006 texFormat = st_choose_format(screen, GL_DEPTH_COMPONENT,
1008 PIPE_BIND_DEPTH_STENCIL);
1009 assert(texFormat != PIPE_FORMAT_NONE);
1012 /* default color format */
1013 texFormat = st_choose_format(screen, GL_RGBA, PIPE_TEXTURE_2D,
1014 PIPE_BIND_SAMPLER_VIEW);
1015 assert(texFormat != PIPE_FORMAT_NONE);
1019 /* Invert src region if needed */
1020 if (st_fb_orientation(ctx->ReadBuffer) == Y_0_TOP) {
1021 srcy = ctx->ReadBuffer->Height - srcy - height;
1022 invertTex = !invertTex;
1025 /* Clip the read region against the src buffer bounds.
1026 * We'll still allocate a temporary buffer/texture for the original
1027 * src region size but we'll only read the region which is on-screen.
1028 * This may mean that we draw garbage pixels into the dest region, but
1035 _mesa_clip_readpixels(ctx, &readX, &readY, &readW, &readH, &pack);
1036 readW = MAX2(0, readW);
1037 readH = MAX2(0, readH);
1039 /* alloc temporary texture */
1040 pt = alloc_texture(st, width, height, texFormat);
1044 sv = st_sampler_view_from_texture(st->pipe, pt);
1046 pipe_resource_reference(&pt, NULL);
1050 /* Make temporary texture which is a copy of the src region.
1052 if (srcFormat == texFormat) {
1053 /* copy source framebuffer surface into mipmap/texture */
1054 struct pipe_surface *psRead = screen->get_tex_surface(screen,
1055 rbRead->texture, 0, 0, 0,
1056 PIPE_BIND_BLIT_SOURCE);
1057 struct pipe_surface *psTex = screen->get_tex_surface(screen, pt, 0, 0, 0,
1058 PIPE_BIND_RENDER_TARGET |
1059 PIPE_BIND_BLIT_DESTINATION);
1060 pipe->surface_copy(pipe,
1061 psTex, /* dest surf */
1062 pack.SkipPixels, pack.SkipRows, /* dest pos */
1063 psRead, /* src surf */
1064 readX, readY, readW, readH); /* src region */
1068 debug_dump_surface(pipe, "copypixsrcsurf", psRead);
1069 debug_dump_surface(pipe, "copypixtemptex", psTex);
1072 pipe_surface_reference(&psRead, NULL);
1073 pipe_surface_reference(&psTex, NULL);
1076 /* CPU-based fallback/conversion */
1077 struct pipe_transfer *ptRead =
1078 st_cond_flush_get_tex_transfer(st, rbRead->texture, 0, 0, 0,
1080 readX, readY, readW, readH);
1081 struct pipe_transfer *ptTex;
1082 enum pipe_transfer_usage transfer_usage;
1084 if (ST_DEBUG & DEBUG_FALLBACK)
1085 debug_printf("%s: fallback processing\n", __FUNCTION__);
1087 if (type == GL_DEPTH && util_format_is_depth_and_stencil(pt->format))
1088 transfer_usage = PIPE_TRANSFER_READ_WRITE;
1090 transfer_usage = PIPE_TRANSFER_WRITE;
1092 ptTex = st_cond_flush_get_tex_transfer(st, pt, 0, 0, 0, transfer_usage,
1093 0, 0, width, height);
1095 /* copy image from ptRead surface to ptTex surface */
1096 if (type == GL_COLOR) {
1097 /* alternate path using get/put_tile() */
1098 GLfloat *buf = (GLfloat *) malloc(width * height * 4 * sizeof(GLfloat));
1099 pipe_get_tile_rgba(pipe, ptRead, readX, readY, readW, readH, buf);
1100 pipe_put_tile_rgba(pipe, ptTex, pack.SkipPixels, pack.SkipRows,
1106 GLuint *buf = (GLuint *) malloc(width * height * sizeof(GLuint));
1107 pipe_get_tile_z(pipe, ptRead, readX, readY, readW, readH, buf);
1108 pipe_put_tile_z(pipe, ptTex, pack.SkipPixels, pack.SkipRows,
1113 pipe->transfer_destroy(pipe, ptRead);
1114 pipe->transfer_destroy(pipe, ptTex);
1117 /* OK, the texture 'pt' contains the src image/pixels. Now draw a
1118 * textured quad with that texture.
1120 draw_textured_quad(ctx, dstx, dsty, ctx->Current.RasterPos[2],
1121 width, height, ctx->Pixel.ZoomX, ctx->Pixel.ZoomY,
1127 pipe_resource_reference(&pt, NULL);
1128 pipe_sampler_view_reference(&sv, NULL);
1133 void st_init_drawpixels_functions(struct dd_function_table *functions)
1135 functions->DrawPixels = st_DrawPixels;
1136 functions->CopyPixels = st_CopyPixels;
1141 st_destroy_drawpix(struct st_context *st)
1143 st_reference_fragprog(st, &st->drawpix.z_shader, NULL);
1144 st_reference_fragprog(st, &st->pixel_xfer.combined_prog, NULL);
1145 if (st->drawpix.vert_shaders[0])
1146 free(st->drawpix.vert_shaders[0]);
1147 if (st->drawpix.vert_shaders[1])
1148 free(st->drawpix.vert_shaders[1]);