From 056612241ae8f8bc836ab78705a154a6d6477e0f Mon Sep 17 00:00:00 2001 From: Brian Paul Date: Mon, 31 Aug 2009 21:13:41 -0600 Subject: [PATCH] mesa: implement GL_DEPTH_BUFFER_BIT for _mesa_meta_blit_framebuffer() --- src/mesa/drivers/common/meta.c | 120 ++++++++++++++++++++++++++------- src/mesa/drivers/common/meta.h | 1 + 2 files changed, 96 insertions(+), 25 deletions(-) diff --git a/src/mesa/drivers/common/meta.c b/src/mesa/drivers/common/meta.c index 8ed6479e345..ec0da71fb95 100644 --- a/src/mesa/drivers/common/meta.c +++ b/src/mesa/drivers/common/meta.c @@ -43,6 +43,7 @@ #include "main/macros.h" #include "main/matrix.h" #include "main/polygon.h" +#include "main/readpix.h" #include "main/scissor.h" #include "main/shaders.h" #include "main/stencil.h" @@ -83,8 +84,8 @@ struct save_state /** META_FOG */ GLboolean Fog; - /** META_PIXELSTORE */ - /* XXX / TO-DO */ + /** META_PIXEL_STORE */ + struct gl_pixelstore_attrib Pack, Unpack; /** META_RASTERIZATION */ GLenum FrontPolygonMode, BackPolygonMode; @@ -143,6 +144,7 @@ struct blit_state { GLuint ArrayObj; GLuint VBO; + GLuint DepthFP; }; @@ -244,29 +246,26 @@ _mesa_meta_free(GLcontext *ctx) * still get freed by _mesa_free_context_data(). */ - if (meta->TempTex.TexObj) { - _mesa_DeleteTextures(1, &meta->TempTex.TexObj); - } + _mesa_DeleteTextures(1, &meta->TempTex.TexObj); - if (meta->Blit.VBO) { - _mesa_DeleteBuffersARB(1, & meta->Blit.VBO); - _mesa_DeleteVertexArraysAPPLE(1, &meta->Blit.ArrayObj); - } + /* glBlitFramebuffer */ + _mesa_DeleteBuffersARB(1, & meta->Blit.VBO); + _mesa_DeleteVertexArraysAPPLE(1, &meta->Blit.ArrayObj); + _mesa_DeletePrograms(1, &meta->Blit.DepthFP); - if (meta->Clear.VBO) { - _mesa_DeleteBuffersARB(1, & meta->Clear.VBO); - _mesa_DeleteVertexArraysAPPLE(1, &meta->Clear.ArrayObj); - } + /* glClear */ + _mesa_DeleteBuffersARB(1, & meta->Clear.VBO); + _mesa_DeleteVertexArraysAPPLE(1, &meta->Clear.ArrayObj); - if (meta->CopyPix.VBO) { - _mesa_DeleteBuffersARB(1, & meta->CopyPix.VBO); - _mesa_DeleteVertexArraysAPPLE(1, &meta->CopyPix.ArrayObj); - } + /* glCopyPixels */ + _mesa_DeleteBuffersARB(1, & meta->CopyPix.VBO); + _mesa_DeleteVertexArraysAPPLE(1, &meta->CopyPix.ArrayObj); - if (meta->DrawPix.VBO) { - _mesa_DeleteBuffersARB(1, & meta->DrawPix.VBO); - _mesa_DeleteVertexArraysAPPLE(1, &meta->DrawPix.ArrayObj); - } + /* glDrawPixels */ + _mesa_DeleteBuffersARB(1, & meta->DrawPix.VBO); + _mesa_DeleteVertexArraysAPPLE(1, &meta->DrawPix.ArrayObj); + _mesa_DeletePrograms(1, &meta->DrawPix.DepthFP); + _mesa_DeletePrograms(1, &meta->DrawPix.StencilFP); } _mesa_free(ctx->Meta); @@ -324,6 +323,13 @@ _mesa_meta_begin(GLcontext *ctx, GLbitfield state) _mesa_set_enable(ctx, GL_FOG, GL_FALSE); } + if (state & META_PIXEL_STORE) { + save->Pack = ctx->Pack; + save->Unpack = ctx->Unpack; + ctx->Pack = ctx->DefaultPacking; + ctx->Unpack = ctx->DefaultPacking; + } + if (state & META_RASTERIZATION) { save->FrontPolygonMode = ctx->Polygon.FrontMode; save->BackPolygonMode = ctx->Polygon.BackMode; @@ -514,6 +520,11 @@ _mesa_meta_end(GLcontext *ctx) _mesa_set_enable(ctx, GL_FOG, save->Fog); } + if (state & META_PIXEL_STORE) { + ctx->Pack = save->Pack; + ctx->Unpack = save->Unpack; + } + if (state & META_RASTERIZATION) { _mesa_PolygonMode(GL_FRONT, save->FrontPolygonMode); _mesa_PolygonMode(GL_BACK, save->BackPolygonMode); @@ -860,6 +871,38 @@ setup_drawpix_texture(struct temp_texture *tex, +/** + * One-time init for drawing depth pixels. + */ +static void +init_blit_depth_pixels(GLcontext *ctx) +{ + static const char *program = + "!!ARBfp1.0\n" + "TEX result.depth, fragment.texcoord[0], texture[0], %s; \n" + "END \n"; + char program2[200]; + struct blit_state *blit = &ctx->Meta->Blit; + struct temp_texture *tex = get_temp_texture(ctx); + const char *texTarget; + + assert(blit->DepthFP == 0); + + /* replace %s with "RECT" or "2D" */ + assert(strlen(program) + 4 < sizeof(program2)); + if (tex->Target == GL_TEXTURE_RECTANGLE) + texTarget = "RECT"; + else + texTarget = "2D"; + _mesa_snprintf(program2, sizeof(program2), program, texTarget); + + _mesa_GenPrograms(1, &blit->DepthFP); + _mesa_BindProgram(GL_FRAGMENT_PROGRAM_ARB, blit->DepthFP); + _mesa_ProgramStringARB(GL_FRAGMENT_PROGRAM_ARB, GL_PROGRAM_FORMAT_ASCII_ARB, + strlen(program2), (const GLubyte *) program2); +} + + /** * Meta implementation of ctx->Driver.BlitFramebuffer() in terms * of texture mapping and polygon rendering. @@ -964,9 +1007,36 @@ _mesa_meta_blit_framebuffer(GLcontext *ctx, _mesa_DrawArrays(GL_TRIANGLE_FAN, 0, 4); mask &= ~GL_COLOR_BUFFER_BIT; } + if (mask & GL_DEPTH_BUFFER_BIT) { - /* XXX todo (need fragment shader) */ + GLuint *tmp = (GLuint *) _mesa_malloc(srcW * srcH * sizeof(GLuint)); + if (tmp) { + if (!blit->DepthFP) + init_blit_depth_pixels(ctx); + + /* maybe change tex format here */ + newTex = alloc_texture(tex, srcW, srcH, GL_DEPTH_COMPONENT); + + _mesa_ReadPixels(srcX, srcY, srcW, srcH, + GL_DEPTH_COMPONENT, GL_UNSIGNED_INT, tmp); + + setup_drawpix_texture(tex, newTex, GL_DEPTH_COMPONENT, srcW, srcH, + GL_DEPTH_COMPONENT, GL_UNSIGNED_INT, tmp); + + _mesa_BindProgram(GL_FRAGMENT_PROGRAM_ARB, blit->DepthFP); + _mesa_set_enable(ctx, GL_FRAGMENT_PROGRAM_ARB, GL_TRUE); + _mesa_ColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE); + _mesa_set_enable(ctx, GL_DEPTH_TEST, GL_TRUE); + _mesa_DepthFunc(GL_ALWAYS); + _mesa_DepthMask(GL_TRUE); + + _mesa_DrawArrays(GL_TRIANGLE_FAN, 0, 4); + mask &= ~GL_DEPTH_BUFFER_BIT; + + _mesa_free(tmp); + } } + if (mask & GL_STENCIL_BUFFER_BIT) { /* XXX can't easily do stencil */ } @@ -975,8 +1045,7 @@ _mesa_meta_blit_framebuffer(GLcontext *ctx, _mesa_meta_end(ctx); - /* XXX, TO-DO: try to handle these cases above! */ - if (mask & (GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT)) { + if (mask) { _swrast_BlitFramebuffer(ctx, srcX0, srcY0, srcX1, srcY1, dstX0, dstY0, dstX1, dstY1, mask, filter); } @@ -991,7 +1060,8 @@ _mesa_meta_clear(GLcontext *ctx, GLbitfield buffers) { struct clear_state *clear = &ctx->Meta->Clear; GLfloat verts[4][7]; /* four verts of X,Y,Z,R,G,B,A */ - GLbitfield metaSave = META_ALL - META_SCISSOR; /* all but scissor */ + /* save all state but scissor, pixel pack/unpack */ + GLbitfield metaSave = META_ALL - META_SCISSOR - META_PIXEL_STORE; if (buffers & BUFFER_BITS_COLOR) { /* if clearing color buffers, don't save/restore colormask */ diff --git a/src/mesa/drivers/common/meta.h b/src/mesa/drivers/common/meta.h index a9c5f980432..b03b64c48a1 100644 --- a/src/mesa/drivers/common/meta.h +++ b/src/mesa/drivers/common/meta.h @@ -45,6 +45,7 @@ #define META_TEXTURE 0x400 #define META_VERTEX 0x800 #define META_VIEWPORT 0x1000 +#define META_PIXEL_STORE 0x2000 #define META_ALL ~0x0 /*@}*/ -- 2.30.2