| /************************************************************************** |
| * |
| * 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. |
| * |
| **************************************************************************/ |
| |
| /* |
| * Authors: |
| * Brian Paul |
| */ |
| |
| #include "main/imports.h" |
| #include "main/image.h" |
| #include "main/bufferobj.h" |
| #include "main/macros.h" |
| #include "main/texformat.h" |
| #include "main/texstore.h" |
| #include "main/state.h" |
| #include "shader/program.h" |
| #include "shader/prog_parameter.h" |
| #include "shader/prog_print.h" |
| |
| #include "st_debug.h" |
| #include "st_context.h" |
| #include "st_atom.h" |
| #include "st_atom_constbuf.h" |
| #include "st_draw.h" |
| #include "st_program.h" |
| #include "st_cb_drawpixels.h" |
| #include "st_cb_readpixels.h" |
| #include "st_cb_fbo.h" |
| #include "st_cb_texture.h" |
| #include "st_draw.h" |
| #include "st_format.h" |
| #include "st_mesa_to_tgsi.h" |
| #include "st_texture.h" |
| #include "st_inlines.h" |
| |
| #include "pipe/p_context.h" |
| #include "pipe/p_defines.h" |
| #include "pipe/p_inlines.h" |
| #include "tgsi/tgsi_ureg.h" |
| #include "util/u_tile.h" |
| #include "util/u_draw_quad.h" |
| #include "util/u_format.h" |
| #include "util/u_math.h" |
| #include "util/u_rect.h" |
| #include "shader/prog_instruction.h" |
| #include "cso_cache/cso_context.h" |
| |
| |
| /** |
| * Check if the given program is: |
| * 0: MOVE result.color, fragment.color; |
| * 1: END; |
| */ |
| static GLboolean |
| is_passthrough_program(const struct gl_fragment_program *prog) |
| { |
| if (prog->Base.NumInstructions == 2) { |
| const struct prog_instruction *inst = prog->Base.Instructions; |
| if (inst[0].Opcode == OPCODE_MOV && |
| inst[1].Opcode == OPCODE_END && |
| inst[0].DstReg.File == PROGRAM_OUTPUT && |
| inst[0].DstReg.Index == FRAG_RESULT_COLOR && |
| inst[0].DstReg.WriteMask == WRITEMASK_XYZW && |
| inst[0].SrcReg[0].File == PROGRAM_INPUT && |
| inst[0].SrcReg[0].Index == FRAG_ATTRIB_COL0 && |
| inst[0].SrcReg[0].Swizzle == SWIZZLE_XYZW) { |
| return GL_TRUE; |
| } |
| } |
| return GL_FALSE; |
| } |
| |
| |
| |
| /** |
| * Make fragment shader for glDraw/CopyPixels. This shader is made |
| * by combining the pixel transfer shader with the user-defined shader. |
| */ |
| static struct st_fragment_program * |
| combined_drawpix_fragment_program(GLcontext *ctx) |
| { |
| struct st_context *st = st_context(ctx); |
| struct st_fragment_program *stfp; |
| |
| if (st->pixel_xfer.program->serialNo == st->pixel_xfer.xfer_prog_sn |
| && st->fp->serialNo == st->pixel_xfer.user_prog_sn) { |
| /* the pixel tranfer program has not changed and the user-defined |
| * program has not changed, so re-use the combined program. |
| */ |
| stfp = st->pixel_xfer.combined_prog; |
| } |
| else { |
| /* Concatenate the pixel transfer program with the current user- |
| * defined program. |
| */ |
| if (is_passthrough_program(&st->fp->Base)) { |
| stfp = (struct st_fragment_program *) |
| _mesa_clone_program(ctx, &st->pixel_xfer.program->Base.Base); |
| } |
| else { |
| #if 0 |
| printf("Base program:\n"); |
| _mesa_print_program(&st->fp->Base.Base); |
| printf("DrawPix program:\n"); |
| _mesa_print_program(&st->pixel_xfer.program->Base.Base); |
| #endif |
| stfp = (struct st_fragment_program *) |
| _mesa_combine_programs(ctx, |
| &st->pixel_xfer.program->Base.Base, |
| &st->fp->Base.Base); |
| } |
| |
| #if 0 |
| { |
| struct gl_program *p = &stfp->Base.Base; |
| printf("Combined DrawPixels program:\n"); |
| _mesa_print_program(p); |
| printf("InputsRead: 0x%x\n", p->InputsRead); |
| printf("OutputsWritten: 0x%x\n", p->OutputsWritten); |
| _mesa_print_parameter_list(p->Parameters); |
| } |
| #endif |
| |
| /* translate to TGSI tokens */ |
| st_translate_fragment_program(st, stfp, NULL); |
| |
| /* save new program, update serial numbers */ |
| st->pixel_xfer.xfer_prog_sn = st->pixel_xfer.program->serialNo; |
| st->pixel_xfer.user_prog_sn = st->fp->serialNo; |
| st->pixel_xfer.combined_prog_sn = stfp->serialNo; |
| /* can't reference new program directly, already have a reference on it */ |
| st_reference_fragprog(st, &st->pixel_xfer.combined_prog, NULL); |
| st->pixel_xfer.combined_prog = stfp; |
| } |
| |
| /* Ideally we'd have updated the pipe constants during the normal |
| * st/atom mechanism. But we can't since this is specific to glDrawPixels. |
| */ |
| st_upload_constants(st, stfp->Base.Base.Parameters, PIPE_SHADER_FRAGMENT); |
| |
| return stfp; |
| } |
| |
| |
| /** |
| * Create fragment shader that does a TEX() instruction to get a Z |
| * value, then writes to FRAG_RESULT_DEPTH. |
| * Pass fragment color through as-is. |
| */ |
| static struct st_fragment_program * |
| make_fragment_shader_z(struct st_context *st) |
| { |
| GLcontext *ctx = st->ctx; |
| struct gl_program *p; |
| GLuint ic = 0; |
| |
| if (st->drawpix.z_shader) { |
| return st->drawpix.z_shader; |
| } |
| |
| /* |
| * Create shader now |
| */ |
| p = ctx->Driver.NewProgram(ctx, GL_FRAGMENT_PROGRAM_ARB, 0); |
| if (!p) |
| return NULL; |
| |
| p->NumInstructions = 3; |
| |
| p->Instructions = _mesa_alloc_instructions(p->NumInstructions); |
| if (!p->Instructions) { |
| ctx->Driver.DeleteProgram(ctx, p); |
| return NULL; |
| } |
| _mesa_init_instructions(p->Instructions, p->NumInstructions); |
| |
| /* TEX result.depth, fragment.texcoord[0], texture[0], 2D; */ |
| p->Instructions[ic].Opcode = OPCODE_TEX; |
| p->Instructions[ic].DstReg.File = PROGRAM_OUTPUT; |
| p->Instructions[ic].DstReg.Index = FRAG_RESULT_DEPTH; |
| p->Instructions[ic].DstReg.WriteMask = WRITEMASK_Z; |
| p->Instructions[ic].SrcReg[0].File = PROGRAM_INPUT; |
| p->Instructions[ic].SrcReg[0].Index = FRAG_ATTRIB_TEX0; |
| p->Instructions[ic].TexSrcUnit = 0; |
| p->Instructions[ic].TexSrcTarget = TEXTURE_2D_INDEX; |
| ic++; |
| |
| /* MOV result.color, fragment.color */ |
| p->Instructions[ic].Opcode = OPCODE_MOV; |
| p->Instructions[ic].DstReg.File = PROGRAM_OUTPUT; |
| p->Instructions[ic].DstReg.Index = FRAG_RESULT_COLOR; |
| p->Instructions[ic].SrcReg[0].File = PROGRAM_INPUT; |
| p->Instructions[ic].SrcReg[0].Index = FRAG_ATTRIB_COL0; |
| ic++; |
| |
| /* END; */ |
| p->Instructions[ic++].Opcode = OPCODE_END; |
| |
| assert(ic == p->NumInstructions); |
| |
| p->InputsRead = FRAG_BIT_TEX0 | FRAG_BIT_COL0; |
| p->OutputsWritten = (1 << FRAG_RESULT_COLOR) | (1 << FRAG_RESULT_DEPTH); |
| p->SamplersUsed = 0x1; /* sampler 0 (bit 0) is used */ |
| |
| st->drawpix.z_shader = (struct st_fragment_program *) p; |
| st_translate_fragment_program(st, st->drawpix.z_shader, NULL); |
| |
| return st->drawpix.z_shader; |
| } |
| |
| |
| |
| /** |
| * Create a simple vertex shader that just passes through the |
| * vertex position and texcoord (and optionally, color). |
| */ |
| static void * |
| st_make_passthrough_vertex_shader(struct st_context *st, |
| GLboolean passColor) |
| { |
| if (!st->drawpix.vert_shaders[passColor]) { |
| struct ureg_program *ureg = |
| ureg_create( TGSI_PROCESSOR_VERTEX ); |
| |
| if (ureg == NULL) |
| return NULL; |
| |
| /* MOV result.pos, vertex.pos; */ |
| ureg_MOV(ureg, |
| ureg_DECL_output( ureg, TGSI_SEMANTIC_POSITION, 0 ), |
| ureg_DECL_vs_input( ureg, 0 )); |
| |
| /* MOV result.texcoord0, vertex.texcoord0; */ |
| ureg_MOV(ureg, |
| ureg_DECL_output( ureg, TGSI_SEMANTIC_GENERIC, 0 ), |
| ureg_DECL_vs_input( ureg, 1 )); |
| |
| if (passColor) { |
| /* MOV result.color0, vertex.color0; */ |
| ureg_MOV(ureg, |
| ureg_DECL_output( ureg, TGSI_SEMANTIC_COLOR, 0 ), |
| ureg_DECL_vs_input( ureg, 2 )); |
| } |
| |
| ureg_END( ureg ); |
| |
| st->drawpix.vert_shaders[passColor] = |
| ureg_create_shader_and_destroy( ureg, st->pipe ); |
| } |
| |
| return st->drawpix.vert_shaders[passColor]; |
| } |
| |
| |
| static GLenum |
| _mesa_base_format(GLenum format) |
| { |
| switch (format) { |
| case GL_DEPTH_COMPONENT: |
| return GL_DEPTH_COMPONENT; |
| case GL_DEPTH_STENCIL: |
| return GL_DEPTH_STENCIL; |
| case GL_STENCIL_INDEX: |
| return GL_STENCIL_INDEX; |
| default: |
| return GL_RGBA; |
| } |
| } |
| |
| |
| /** |
| * Make texture containing an image for glDrawPixels image. |
| * If 'pixels' is NULL, leave the texture image data undefined. |
| */ |
| static struct pipe_texture * |
| make_texture(struct st_context *st, |
| GLsizei width, GLsizei height, GLenum format, GLenum type, |
| const struct gl_pixelstore_attrib *unpack, |
| const GLvoid *pixels) |
| { |
| GLcontext *ctx = st->ctx; |
| struct pipe_context *pipe = st->pipe; |
| struct pipe_screen *screen = pipe->screen; |
| gl_format mformat; |
| struct pipe_texture *pt; |
| enum pipe_format pipeFormat; |
| GLuint cpp; |
| GLenum baseFormat; |
| int ptw, pth; |
| |
| baseFormat = _mesa_base_format(format); |
| |
| mformat = st_ChooseTextureFormat(ctx, baseFormat, format, type); |
| assert(mformat); |
| |
| pipeFormat = st_mesa_format_to_pipe_format(mformat); |
| assert(pipeFormat); |
| cpp = st_sizeof_format(pipeFormat); |
| |
| pixels = _mesa_map_pbo_source(ctx, unpack, pixels); |
| if (!pixels) |
| return NULL; |
| |
| /* Need to use POT texture? */ |
| ptw = width; |
| pth = height; |
| if (!screen->get_param(screen, PIPE_CAP_NPOT_TEXTURES)) { |
| int l2pt, maxSize; |
| |
| l2pt = util_logbase2(width); |
| if (1<<l2pt != width) { |
| ptw = 1<<(l2pt+1); |
| } |
| l2pt = util_logbase2(height); |
| if (1<<l2pt != height) { |
| pth = 1<<(l2pt+1); |
| } |
| |
| /* Check against maximum texture size */ |
| maxSize = 1 << (pipe->screen->get_param(pipe->screen, PIPE_CAP_MAX_TEXTURE_2D_LEVELS) - 1); |
| assert(ptw <= maxSize); |
| assert(pth <= maxSize); |
| } |
| |
| pt = st_texture_create(st, PIPE_TEXTURE_2D, pipeFormat, 0, ptw, pth, 1, |
| PIPE_TEXTURE_USAGE_SAMPLER); |
| if (!pt) { |
| _mesa_unmap_pbo_source(ctx, unpack); |
| return NULL; |
| } |
| |
| { |
| struct pipe_transfer *transfer; |
| static const GLuint dstImageOffsets = 0; |
| GLboolean success; |
| GLubyte *dest; |
| const GLbitfield imageTransferStateSave = ctx->_ImageTransferState; |
| |
| /* we'll do pixel transfer in a fragment shader */ |
| ctx->_ImageTransferState = 0x0; |
| |
| transfer = st_no_flush_get_tex_transfer(st, pt, 0, 0, 0, |
| PIPE_TRANSFER_WRITE, 0, 0, |
| width, height); |
| |
| /* map texture transfer */ |
| dest = screen->transfer_map(screen, transfer); |
| |
| |
| /* Put image into texture transfer. |
| * Note that the image is actually going to be upside down in |
| * the texture. We deal with that with texcoords. |
| */ |
| success = _mesa_texstore(ctx, 2, /* dims */ |
| baseFormat, /* baseInternalFormat */ |
| mformat, /* gl_format */ |
| dest, /* dest */ |
| 0, 0, 0, /* dstX/Y/Zoffset */ |
| transfer->stride, /* dstRowStride, bytes */ |
| &dstImageOffsets, /* dstImageOffsets */ |
| width, height, 1, /* size */ |
| format, type, /* src format/type */ |
| pixels, /* data source */ |
| unpack); |
| |
| /* unmap */ |
| screen->transfer_unmap(screen, transfer); |
| screen->tex_transfer_destroy(transfer); |
| |
| assert(success); |
| |
| /* restore */ |
| ctx->_ImageTransferState = imageTransferStateSave; |
| } |
| |
| _mesa_unmap_pbo_source(ctx, unpack); |
| |
| return pt; |
| } |
| |
| |
| /** |
| * Draw quad with texcoords and optional color. |
| * Coords are window coords with y=0=bottom. |
| * \param color may be null |
| * \param invertTex if true, flip texcoords vertically |
| */ |
| static void |
| draw_quad(GLcontext *ctx, GLfloat x0, GLfloat y0, GLfloat z, |
| GLfloat x1, GLfloat y1, const GLfloat *color, |
| GLboolean invertTex, GLfloat maxXcoord, GLfloat maxYcoord) |
| { |
| struct st_context *st = st_context(ctx); |
| struct pipe_context *pipe = st->pipe; |
| GLfloat verts[4][3][4]; /* four verts, three attribs, XYZW */ |
| |
| /* setup vertex data */ |
| { |
| const struct gl_framebuffer *fb = st->ctx->DrawBuffer; |
| const GLfloat fb_width = (GLfloat) fb->Width; |
| const GLfloat fb_height = (GLfloat) fb->Height; |
| const GLfloat clip_x0 = x0 / fb_width * 2.0f - 1.0f; |
| const GLfloat clip_y0 = y0 / fb_height * 2.0f - 1.0f; |
| const GLfloat clip_x1 = x1 / fb_width * 2.0f - 1.0f; |
| const GLfloat clip_y1 = y1 / fb_height * 2.0f - 1.0f; |
| const GLfloat sLeft = 0.0f, sRight = maxXcoord; |
| const GLfloat tTop = invertTex ? maxYcoord : 0.0f; |
| const GLfloat tBot = invertTex ? 0.0f : maxYcoord; |
| GLuint tex, i; |
| |
| /* upper-left */ |
| verts[0][0][0] = clip_x0; /* v[0].attr[0].x */ |
| verts[0][0][1] = clip_y0; /* v[0].attr[0].y */ |
| |
| /* upper-right */ |
| verts[1][0][0] = clip_x1; |
| verts[1][0][1] = clip_y0; |
| |
| /* lower-right */ |
| verts[2][0][0] = clip_x1; |
| verts[2][0][1] = clip_y1; |
| |
| /* lower-left */ |
| verts[3][0][0] = clip_x0; |
| verts[3][0][1] = clip_y1; |
| |
| tex = color ? 2 : 1; |
| verts[0][tex][0] = sLeft; /* v[0].attr[tex].s */ |
| verts[0][tex][1] = tTop; /* v[0].attr[tex].t */ |
| verts[1][tex][0] = sRight; |
| verts[1][tex][1] = tTop; |
| verts[2][tex][0] = sRight; |
| verts[2][tex][1] = tBot; |
| verts[3][tex][0] = sLeft; |
| verts[3][tex][1] = tBot; |
| |
| /* same for all verts: */ |
| if (color) { |
| for (i = 0; i < 4; i++) { |
| verts[i][0][2] = z; /*Z*/ |
| verts[i][0][3] = 1.0f; /*W*/ |
| verts[i][1][0] = color[0]; |
| verts[i][1][1] = color[1]; |
| verts[i][1][2] = color[2]; |
| verts[i][1][3] = color[3]; |
| verts[i][2][2] = 0.0f; /*R*/ |
| verts[i][2][3] = 1.0f; /*Q*/ |
| } |
| } |
| else { |
| for (i = 0; i < 4; i++) { |
| verts[i][0][2] = z; /*Z*/ |
| verts[i][0][3] = 1.0f; /*W*/ |
| verts[i][1][2] = 0.0f; /*R*/ |
| verts[i][1][3] = 1.0f; /*Q*/ |
| } |
| } |
| } |
| |
| { |
| struct pipe_buffer *buf; |
| |
| /* allocate/load buffer object with vertex data */ |
| buf = pipe_buffer_create(pipe->screen, 32, PIPE_BUFFER_USAGE_VERTEX, |
| sizeof(verts)); |
| st_no_flush_pipe_buffer_write(st, buf, 0, sizeof(verts), verts); |
| |
| util_draw_vertex_buffer(pipe, buf, 0, |
| PIPE_PRIM_QUADS, |
| 4, /* verts */ |
| 3); /* attribs/vert */ |
| pipe_buffer_reference(&buf, NULL); |
| } |
| } |
| |
| |
| |
| static void |
| draw_textured_quad(GLcontext *ctx, GLint x, GLint y, GLfloat z, |
| GLsizei width, GLsizei height, |
| GLfloat zoomX, GLfloat zoomY, |
| struct pipe_texture *pt, |
| void *driver_vp, |
| void *driver_fp, |
| const GLfloat *color, |
| GLboolean invertTex) |
| { |
| struct st_context *st = st_context(ctx); |
| struct pipe_context *pipe = st->pipe; |
| struct cso_context *cso = st->cso_context; |
| GLfloat x0, y0, x1, y1; |
| GLsizei maxSize; |
| |
| /* limit checks */ |
| /* XXX if DrawPixels image is larger than max texture size, break |
| * it up into chunks. |
| */ |
| maxSize = 1 << (pipe->screen->get_param(pipe->screen, PIPE_CAP_MAX_TEXTURE_2D_LEVELS) - 1); |
| assert(width <= maxSize); |
| assert(height <= maxSize); |
| |
| cso_save_rasterizer(cso); |
| cso_save_viewport(cso); |
| cso_save_samplers(cso); |
| cso_save_sampler_textures(cso); |
| cso_save_fragment_shader(cso); |
| cso_save_vertex_shader(cso); |
| |
| /* rasterizer state: just scissor */ |
| { |
| struct pipe_rasterizer_state rasterizer; |
| memset(&rasterizer, 0, sizeof(rasterizer)); |
| rasterizer.gl_rasterization_rules = 1; |
| rasterizer.scissor = ctx->Scissor.Enabled; |
| cso_set_rasterizer(cso, &rasterizer); |
| } |
| |
| /* fragment shader state: TEX lookup program */ |
| cso_set_fragment_shader_handle(cso, driver_fp); |
| |
| /* vertex shader state: position + texcoord pass-through */ |
| cso_set_vertex_shader_handle(cso, driver_vp); |
| |
| |
| /* texture sampling state: */ |
| { |
| struct pipe_sampler_state sampler; |
| memset(&sampler, 0, sizeof(sampler)); |
| sampler.wrap_s = PIPE_TEX_WRAP_CLAMP; |
| sampler.wrap_t = PIPE_TEX_WRAP_CLAMP; |
| sampler.wrap_r = PIPE_TEX_WRAP_CLAMP; |
| sampler.min_img_filter = PIPE_TEX_FILTER_NEAREST; |
| sampler.min_mip_filter = PIPE_TEX_MIPFILTER_NONE; |
| sampler.mag_img_filter = PIPE_TEX_FILTER_NEAREST; |
| 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); |
| } |
| |
| /* viewport state: viewport matching window dims */ |
| { |
| const float w = (float) ctx->DrawBuffer->Width; |
| const float h = (float) ctx->DrawBuffer->Height; |
| struct pipe_viewport_state vp; |
| vp.scale[0] = 0.5f * w; |
| vp.scale[1] = -0.5f * h; |
| vp.scale[2] = 1.0f; |
| vp.scale[3] = 1.0f; |
| vp.translate[0] = 0.5f * w; |
| vp.translate[1] = 0.5f * h; |
| vp.translate[2] = 0.0f; |
| vp.translate[3] = 0.0f; |
| cso_set_viewport(cso, &vp); |
| } |
| |
| /* texture state: */ |
| if (st->pixel_xfer.pixelmap_enabled) { |
| struct pipe_texture *textures[2]; |
| textures[0] = pt; |
| textures[1] = st->pixel_xfer.pixelmap_texture; |
| pipe->set_fragment_sampler_textures(pipe, 2, textures); |
| } |
| else { |
| pipe->set_fragment_sampler_textures(pipe, 1, &pt); |
| } |
| |
| /* Compute window coords (y=0=bottom) with pixel zoom. |
| * Recall that these coords are transformed by the current |
| * vertex shader and viewport transformation. |
| */ |
| x0 = (GLfloat) x; |
| x1 = x + width * ctx->Pixel.ZoomX; |
| y0 = (GLfloat) y; |
| y1 = y + height * ctx->Pixel.ZoomY; |
| |
| draw_quad(ctx, x0, y0, z, x1, y1, color, invertTex, |
| (GLfloat) width / pt->width0, |
| (GLfloat) height / pt->height0); |
| |
| /* restore state */ |
| cso_restore_rasterizer(cso); |
| cso_restore_viewport(cso); |
| cso_restore_samplers(cso); |
| cso_restore_sampler_textures(cso); |
| cso_restore_fragment_shader(cso); |
| cso_restore_vertex_shader(cso); |
| } |
| |
| |
| static void |
| draw_stencil_pixels(GLcontext *ctx, GLint x, GLint y, |
| GLsizei width, GLsizei height, GLenum format, GLenum type, |
| const struct gl_pixelstore_attrib *unpack, |
| const GLvoid *pixels) |
| { |
| struct st_context *st = st_context(ctx); |
| struct pipe_context *pipe = st->pipe; |
| struct pipe_screen *screen = pipe->screen; |
| struct st_renderbuffer *strb; |
| enum pipe_transfer_usage usage; |
| struct pipe_transfer *pt; |
| const GLboolean zoom = ctx->Pixel.ZoomX != 1.0 || ctx->Pixel.ZoomY != 1.0; |
| GLint skipPixels; |
| ubyte *stmap; |
| struct gl_pixelstore_attrib clippedUnpack = *unpack; |
| |
| if (!zoom) { |
| if (!_mesa_clip_drawpixels(ctx, &x, &y, &width, &height, |
| &clippedUnpack)) { |
| /* totally clipped */ |
| return; |
| } |
| } |
| |
| strb = st_renderbuffer(ctx->DrawBuffer-> |
| Attachment[BUFFER_STENCIL].Renderbuffer); |
| |
| if (st_fb_orientation(ctx->DrawBuffer) == Y_0_TOP) { |
| y = ctx->DrawBuffer->Height - y - height; |
| } |
| |
| if(format != GL_DEPTH_STENCIL && |
| util_format_get_component_bits(strb->format, UTIL_FORMAT_COLORSPACE_ZS, 0) != 0) |
| usage = PIPE_TRANSFER_READ_WRITE; |
| else |
| usage = PIPE_TRANSFER_WRITE; |
| |
| pt = st_cond_flush_get_tex_transfer(st_context(ctx), strb->texture, 0, 0, 0, |
| usage, x, y, |
| width, height); |
| |
| stmap = screen->transfer_map(screen, pt); |
| |
| pixels = _mesa_map_pbo_source(ctx, &clippedUnpack, pixels); |
| assert(pixels); |
| |
| /* if width > MAX_WIDTH, have to process image in chunks */ |
| skipPixels = 0; |
| while (skipPixels < width) { |
| const GLint spanX = skipPixels; |
| const GLint spanWidth = MIN2(width - skipPixels, MAX_WIDTH); |
| GLint row; |
| for (row = 0; row < height; row++) { |
| GLubyte sValues[MAX_WIDTH]; |
| GLuint zValues[MAX_WIDTH]; |
| GLenum destType = GL_UNSIGNED_BYTE; |
| const GLvoid *source = _mesa_image_address2d(&clippedUnpack, pixels, |
| width, height, |
| format, type, |
| row, skipPixels); |
| _mesa_unpack_stencil_span(ctx, spanWidth, destType, sValues, |
| type, source, &clippedUnpack, |
| ctx->_ImageTransferState); |
| |
| if (format == GL_DEPTH_STENCIL) { |
| _mesa_unpack_depth_span(ctx, spanWidth, GL_UNSIGNED_INT, zValues, |
| (1 << 24) - 1, type, source, |
| &clippedUnpack); |
| } |
| |
| if (zoom) { |
| _mesa_problem(ctx, "Gallium glDrawPixels(GL_STENCIL) with " |
| "zoom not complete"); |
| } |
| |
| { |
| GLint spanY; |
| |
| if (st_fb_orientation(ctx->DrawBuffer) == Y_0_TOP) { |
| spanY = height - row - 1; |
| } |
| else { |
| spanY = row; |
| } |
| |
| /* now pack the stencil (and Z) values in the dest format */ |
| switch (pt->texture->format) { |
| case PIPE_FORMAT_S8_UNORM: |
| { |
| ubyte *dest = stmap + spanY * pt->stride + spanX; |
| assert(usage == PIPE_TRANSFER_WRITE); |
| memcpy(dest, sValues, spanWidth); |
| } |
| break; |
| case PIPE_FORMAT_S8Z24_UNORM: |
| if (format == GL_DEPTH_STENCIL) { |
| uint *dest = (uint *) (stmap + spanY * pt->stride + spanX*4); |
| GLint k; |
| assert(usage == PIPE_TRANSFER_WRITE); |
| for (k = 0; k < spanWidth; k++) { |
| dest[k] = zValues[k] | (sValues[k] << 24); |
| } |
| } |
| else { |
| uint *dest = (uint *) (stmap + spanY * pt->stride + spanX*4); |
| GLint k; |
| assert(usage == PIPE_TRANSFER_READ_WRITE); |
| for (k = 0; k < spanWidth; k++) { |
| dest[k] = (dest[k] & 0xffffff) | (sValues[k] << 24); |
| } |
| } |
| break; |
| case PIPE_FORMAT_Z24S8_UNORM: |
| if (format == GL_DEPTH_STENCIL) { |
| uint *dest = (uint *) (stmap + spanY * pt->stride + spanX*4); |
| GLint k; |
| assert(usage == PIPE_TRANSFER_WRITE); |
| for (k = 0; k < spanWidth; k++) { |
| dest[k] = (zValues[k] << 8) | (sValues[k] & 0xff); |
| } |
| } |
| else { |
| uint *dest = (uint *) (stmap + spanY * pt->stride + spanX*4); |
| GLint k; |
| assert(usage == PIPE_TRANSFER_READ_WRITE); |
| for (k = 0; k < spanWidth; k++) { |
| dest[k] = (dest[k] & 0xffffff00) | (sValues[k] & 0xff); |
| } |
| } |
| break; |
| default: |
| assert(0); |
| } |
| } |
| } |
| skipPixels += spanWidth; |
| } |
| |
| _mesa_unmap_pbo_source(ctx, &clippedUnpack); |
| |
| /* unmap the stencil buffer */ |
| screen->transfer_unmap(screen, pt); |
| screen->tex_transfer_destroy(pt); |
| } |
| |
| |
| /** |
| * Called via ctx->Driver.DrawPixels() |
| */ |
| static void |
| st_DrawPixels(GLcontext *ctx, GLint x, GLint y, GLsizei width, GLsizei height, |
| GLenum format, GLenum type, |
| const struct gl_pixelstore_attrib *unpack, const GLvoid *pixels) |
| { |
| struct st_fragment_program *stfp; |
| void *driver_vp; |
| struct st_context *st = st_context(ctx); |
| struct pipe_surface *ps; |
| const GLfloat *color; |
| |
| if (format == GL_STENCIL_INDEX || |
| format == GL_DEPTH_STENCIL) { |
| draw_stencil_pixels(ctx, x, y, width, height, format, type, |
| unpack, pixels); |
| return; |
| } |
| |
| /* Mesa state should be up to date by now */ |
| assert(ctx->NewState == 0x0); |
| |
| st_validate_state(st); |
| |
| if (format == GL_DEPTH_COMPONENT) { |
| ps = st->state.framebuffer.zsbuf; |
| stfp = make_fragment_shader_z(st); |
| driver_vp = st_make_passthrough_vertex_shader(st, GL_TRUE); |
| color = ctx->Current.RasterColor; |
| } |
| else { |
| ps = st->state.framebuffer.cbufs[0]; |
| stfp = combined_drawpix_fragment_program(ctx); |
| driver_vp = st_make_passthrough_vertex_shader(st, GL_FALSE); |
| color = NULL; |
| } |
| |
| /* draw with textured quad */ |
| { |
| struct pipe_texture *pt |
| = make_texture(st, width, height, format, type, unpack, pixels); |
| if (pt) { |
| draw_textured_quad(ctx, x, y, ctx->Current.RasterPos[2], |
| width, height, ctx->Pixel.ZoomX, ctx->Pixel.ZoomY, |
| pt, |
| driver_vp, |
| stfp->driver_shader, |
| color, GL_FALSE); |
| pipe_texture_reference(&pt, NULL); |
| } |
| } |
| } |
| |
| |
| |
| static void |
| copy_stencil_pixels(GLcontext *ctx, GLint srcx, GLint srcy, |
| GLsizei width, GLsizei height, |
| GLint dstx, GLint dsty) |
| { |
| struct st_renderbuffer *rbDraw = st_renderbuffer(ctx->DrawBuffer->_StencilBuffer); |
| struct pipe_screen *screen = ctx->st->pipe->screen; |
| enum pipe_transfer_usage usage; |
| struct pipe_transfer *ptDraw; |
| ubyte *drawMap; |
| ubyte *buffer; |
| int i; |
| |
| buffer = _mesa_malloc(width * height * sizeof(ubyte)); |
| if (!buffer) { |
| _mesa_error(ctx, GL_OUT_OF_MEMORY, "glCopyPixels(stencil)"); |
| return; |
| } |
| |
| /* this will do stencil pixel transfer ops */ |
| st_read_stencil_pixels(ctx, srcx, srcy, width, height, |
| GL_STENCIL_INDEX, GL_UNSIGNED_BYTE, |
| &ctx->DefaultPacking, buffer); |
| |
| if(util_format_get_component_bits(rbDraw->format, UTIL_FORMAT_COLORSPACE_ZS, 0) != 0) |
| usage = PIPE_TRANSFER_READ_WRITE; |
| else |
| usage = PIPE_TRANSFER_WRITE; |
| |
| if (st_fb_orientation(ctx->DrawBuffer) == Y_0_TOP) { |
| dsty = rbDraw->Base.Height - dsty - height; |
| } |
| |
| ptDraw = st_cond_flush_get_tex_transfer(st_context(ctx), |
| rbDraw->texture, 0, 0, 0, |
| usage, dstx, dsty, |
| width, height); |
| |
| assert(util_format_get_blockwidth(ptDraw->texture->format) == 1); |
| assert(util_format_get_blockheight(ptDraw->texture->format) == 1); |
| |
| /* map the stencil buffer */ |
| drawMap = screen->transfer_map(screen, ptDraw); |
| |
| /* draw */ |
| /* XXX PixelZoom not handled yet */ |
| for (i = 0; i < height; i++) { |
| ubyte *dst; |
| const ubyte *src; |
| int y; |
| |
| y = i; |
| |
| if (st_fb_orientation(ctx->DrawBuffer) == Y_0_TOP) { |
| y = height - y - 1; |
| } |
| |
| dst = drawMap + y * ptDraw->stride; |
| src = buffer + i * width; |
| |
| switch (ptDraw->texture->format) { |
| case PIPE_FORMAT_S8Z24_UNORM: |
| { |
| uint *dst4 = (uint *) dst; |
| int j; |
| assert(usage == PIPE_TRANSFER_READ_WRITE); |
| for (j = 0; j < width; j++) { |
| *dst4 = (*dst4 & 0xffffff) | (src[j] << 24); |
| dst4++; |
| } |
| } |
| break; |
| case PIPE_FORMAT_Z24S8_UNORM: |
| { |
| uint *dst4 = (uint *) dst; |
| int j; |
| assert(usage == PIPE_TRANSFER_READ_WRITE); |
| for (j = 0; j < width; j++) { |
| *dst4 = (*dst4 & 0xffffff00) | (src[j] & 0xff); |
| dst4++; |
| } |
| } |
| break; |
| case PIPE_FORMAT_S8_UNORM: |
| assert(usage == PIPE_TRANSFER_WRITE); |
| memcpy(dst, src, width); |
| break; |
| default: |
| assert(0); |
| } |
| } |
| |
| _mesa_free(buffer); |
| |
| /* unmap the stencil buffer */ |
| screen->transfer_unmap(screen, ptDraw); |
| screen->tex_transfer_destroy(ptDraw); |
| } |
| |
| |
| static void |
| st_CopyPixels(GLcontext *ctx, GLint srcx, GLint srcy, |
| GLsizei width, GLsizei height, |
| GLint dstx, GLint dsty, GLenum type) |
| { |
| struct st_context *st = st_context(ctx); |
| struct pipe_context *pipe = st->pipe; |
| struct pipe_screen *screen = pipe->screen; |
| struct st_renderbuffer *rbRead; |
| void *driver_vp; |
| struct st_fragment_program *stfp; |
| struct pipe_texture *pt; |
| GLfloat *color; |
| enum pipe_format srcFormat, texFormat; |
| int ptw, pth; |
| |
| pipe->flush(pipe, PIPE_FLUSH_RENDER_CACHE, NULL); |
| |
| st_validate_state(st); |
| |
| if (srcx < 0) { |
| width -= -srcx; |
| dstx += -srcx; |
| srcx = 0; |
| } |
| |
| if (srcy < 0) { |
| height -= -srcy; |
| dsty += -srcy; |
| srcy = 0; |
| } |
| |
| if (dstx < 0) { |
| width -= -dstx; |
| srcx += -dstx; |
| dstx = 0; |
| } |
| |
| if (dsty < 0) { |
| height -= -dsty; |
| srcy += -dsty; |
| dsty = 0; |
| } |
| |
| if (width < 0 || height < 0) |
| return; |
| |
| |
| if (type == GL_STENCIL) { |
| /* can't use texturing to do stencil */ |
| copy_stencil_pixels(ctx, srcx, srcy, width, height, dstx, dsty); |
| return; |
| } |
| |
| if (type == GL_COLOR) { |
| rbRead = st_get_color_read_renderbuffer(ctx); |
| color = NULL; |
| stfp = combined_drawpix_fragment_program(ctx); |
| driver_vp = st_make_passthrough_vertex_shader(st, GL_FALSE); |
| } |
| else { |
| assert(type == GL_DEPTH); |
| rbRead = st_renderbuffer(ctx->ReadBuffer->_DepthBuffer); |
| color = ctx->Current.Attrib[VERT_ATTRIB_COLOR0]; |
| stfp = make_fragment_shader_z(st); |
| driver_vp = st_make_passthrough_vertex_shader(st, GL_TRUE); |
| } |
| |
| srcFormat = rbRead->texture->format; |
| |
| if (screen->is_format_supported(screen, srcFormat, PIPE_TEXTURE_2D, |
| PIPE_TEXTURE_USAGE_SAMPLER, 0)) { |
| texFormat = srcFormat; |
| } |
| else { |
| /* srcFormat can't be used as a texture format */ |
| if (type == GL_DEPTH) { |
| texFormat = st_choose_format(screen, GL_DEPTH_COMPONENT, |
| PIPE_TEXTURE_2D, |
| PIPE_TEXTURE_USAGE_DEPTH_STENCIL); |
| assert(texFormat != PIPE_FORMAT_NONE); /* XXX no depth texture formats??? */ |
| } |
| else { |
| /* default color format */ |
| texFormat = st_choose_format(screen, GL_RGBA, PIPE_TEXTURE_2D, |
| PIPE_TEXTURE_USAGE_SAMPLER); |
| assert(texFormat != PIPE_FORMAT_NONE); |
| } |
| } |
| |
| if (st_fb_orientation(ctx->DrawBuffer) == Y_0_TOP) { |
| srcy = ctx->DrawBuffer->Height - srcy - height; |
| |
| if (srcy < 0) { |
| height -= -srcy; |
| srcy = 0; |
| } |
| |
| if (height < 0) |
| return; |
| } |
| |
| /* Need to use POT texture? */ |
| ptw = width; |
| pth = height; |
| if (!screen->get_param(screen, PIPE_CAP_NPOT_TEXTURES)) { |
| int l2pt, maxSize; |
| |
| l2pt = util_logbase2(width); |
| if (1<<l2pt != width) { |
| ptw = 1<<(l2pt+1); |
| } |
| l2pt = util_logbase2(height); |
| if (1<<l2pt != height) { |
| pth = 1<<(l2pt+1); |
| } |
| |
| /* Check against maximum texture size */ |
| maxSize = 1 << (pipe->screen->get_param(pipe->screen, PIPE_CAP_MAX_TEXTURE_2D_LEVELS) - 1); |
| assert(ptw <= maxSize); |
| assert(pth <= maxSize); |
| } |
| |
| pt = st_texture_create(st, PIPE_TEXTURE_2D, texFormat, 0, |
| ptw, pth, 1, |
| PIPE_TEXTURE_USAGE_SAMPLER); |
| if (!pt) |
| return; |
| |
| |
| if (srcFormat == texFormat) { |
| /* copy source framebuffer surface into mipmap/texture */ |
| struct pipe_surface *psRead = screen->get_tex_surface(screen, |
| rbRead->texture, 0, 0, 0, |
| PIPE_BUFFER_USAGE_GPU_READ); |
| struct pipe_surface *psTex = screen->get_tex_surface(screen, pt, 0, 0, 0, |
| PIPE_BUFFER_USAGE_GPU_WRITE ); |
| if (pipe->surface_copy) { |
| pipe->surface_copy(pipe, |
| psTex, /* dest */ |
| 0, 0, /* destx/y */ |
| psRead, |
| srcx, srcy, width, height); |
| } else { |
| util_surface_copy(pipe, FALSE, |
| psTex, |
| 0, 0, |
| psRead, |
| srcx, srcy, width, height); |
| } |
| pipe_surface_reference(&psRead, NULL); |
| pipe_surface_reference(&psTex, NULL); |
| } |
| else { |
| /* CPU-based fallback/conversion */ |
| struct pipe_transfer *ptRead = |
| st_cond_flush_get_tex_transfer(st, rbRead->texture, 0, 0, 0, |
| PIPE_TRANSFER_READ, srcx, srcy, width, |
| height); |
| struct pipe_transfer *ptTex; |
| enum pipe_transfer_usage transfer_usage; |
| |
| if (ST_DEBUG & DEBUG_FALLBACK) |
| debug_printf("%s: fallback processing\n", __FUNCTION__); |
| |
| if (type == GL_DEPTH && util_format_is_depth_and_stencil(pt->format)) |
| transfer_usage = PIPE_TRANSFER_READ_WRITE; |
| else |
| transfer_usage = PIPE_TRANSFER_WRITE; |
| |
| ptTex = st_cond_flush_get_tex_transfer(st, pt, 0, 0, 0, transfer_usage, |
| 0, 0, width, height); |
| |
| if (type == GL_COLOR) { |
| /* alternate path using get/put_tile() */ |
| GLfloat *buf = (GLfloat *) _mesa_malloc(width * height * 4 * sizeof(GLfloat)); |
| |
| pipe_get_tile_rgba(ptRead, 0, 0, width, height, buf); |
| pipe_put_tile_rgba(ptTex, 0, 0, width, height, buf); |
| |
| _mesa_free(buf); |
| } |
| else { |
| /* GL_DEPTH */ |
| GLuint *buf = (GLuint *) _mesa_malloc(width * height * sizeof(GLuint)); |
| pipe_get_tile_z(ptRead, 0, 0, width, height, buf); |
| pipe_put_tile_z(ptTex, 0, 0, width, height, buf); |
| _mesa_free(buf); |
| } |
| |
| screen->tex_transfer_destroy(ptRead); |
| screen->tex_transfer_destroy(ptTex); |
| } |
| |
| /* draw textured quad */ |
| draw_textured_quad(ctx, dstx, dsty, ctx->Current.RasterPos[2], |
| width, height, ctx->Pixel.ZoomX, ctx->Pixel.ZoomY, |
| pt, |
| driver_vp, |
| stfp->driver_shader, |
| color, GL_TRUE); |
| |
| pipe_texture_reference(&pt, NULL); |
| } |
| |
| |
| |
| void st_init_drawpixels_functions(struct dd_function_table *functions) |
| { |
| functions->DrawPixels = st_DrawPixels; |
| functions->CopyPixels = st_CopyPixels; |
| } |
| |
| |
| void |
| st_destroy_drawpix(struct st_context *st) |
| { |
| st_reference_fragprog(st, &st->drawpix.z_shader, NULL); |
| st_reference_fragprog(st, &st->pixel_xfer.combined_prog, NULL); |
| st_reference_vertprog(st, &st->drawpix.vert_shaders[0], NULL); |
| st_reference_vertprog(st, &st->drawpix.vert_shaders[1], NULL); |
| } |