diff options
Diffstat (limited to 'mesalib/src/mesa/drivers')
| -rw-r--r-- | mesalib/src/mesa/drivers/common/driverfuncs.c | 2 | ||||
| -rw-r--r-- | mesalib/src/mesa/drivers/common/meta.c | 492 | ||||
| -rw-r--r-- | mesalib/src/mesa/drivers/common/meta.h | 7 |
3 files changed, 408 insertions, 93 deletions
diff --git a/mesalib/src/mesa/drivers/common/driverfuncs.c b/mesalib/src/mesa/drivers/common/driverfuncs.c index 14990b9c9..63df03f5d 100644 --- a/mesalib/src/mesa/drivers/common/driverfuncs.c +++ b/mesalib/src/mesa/drivers/common/driverfuncs.c @@ -94,7 +94,7 @@ _mesa_init_driver_functions(struct dd_function_table *driver) driver->TexSubImage1D = _mesa_store_texsubimage1d;
driver->TexSubImage2D = _mesa_store_texsubimage2d;
driver->TexSubImage3D = _mesa_store_texsubimage3d;
- driver->GetTexImage = _mesa_get_teximage;
+ driver->GetTexImage = _mesa_meta_GetTexImage;
driver->CopyTexSubImage1D = _mesa_meta_CopyTexSubImage1D;
driver->CopyTexSubImage2D = _mesa_meta_CopyTexSubImage2D;
driver->CopyTexSubImage3D = _mesa_meta_CopyTexSubImage3D;
diff --git a/mesalib/src/mesa/drivers/common/meta.c b/mesalib/src/mesa/drivers/common/meta.c index ad04d369f..2ebcd35bd 100644 --- a/mesalib/src/mesa/drivers/common/meta.c +++ b/mesalib/src/mesa/drivers/common/meta.c @@ -59,6 +59,7 @@ #include "main/stencil.h" #include "main/texobj.h" #include "main/texenv.h" +#include "main/texgetimage.h" #include "main/teximage.h" #include "main/texparam.h" #include "main/texstate.h" @@ -259,6 +260,18 @@ struct gen_mipmap_state GLuint FBO; }; + +/** + * State for texture decompression + */ +struct decompress_state +{ + GLuint ArrayObj; + GLuint VBO, FBO, RBO; + GLint Width, Height; +}; + + #define MAX_META_OPS_DEPTH 2 /** * All per-context meta state. @@ -278,6 +291,7 @@ struct gl_meta_state struct drawpix_state DrawPix; /**< For _mesa_meta_DrawPixels() */ struct bitmap_state Bitmap; /**< For _mesa_meta_Bitmap() */ struct gen_mipmap_state Mipmap; /**< For _mesa_meta_GenerateMipmap() */ + struct decompress_state Decompress; /**< For texture decompression */ }; @@ -2477,6 +2491,160 @@ _mesa_meta_check_generate_mipmap_fallback(struct gl_context *ctx, GLenum target, /** + * Compute the texture coordinates for the four vertices of a quad for + * drawing a 2D texture image or slice of a cube/3D texture. + * \param faceTarget GL_TEXTURE_1D/2D/3D or cube face name + * \param slice slice of a 1D/2D array texture or 3D texture + * \param width width of the texture image + * \param height height of the texture image + * \param coords0/1/2/3 returns the computed texcoords + */ +static void +setup_texture_coords(GLenum faceTarget, + GLint slice, + GLint width, + GLint height, + GLfloat coords0[3], + GLfloat coords1[3], + GLfloat coords2[3], + GLfloat coords3[3]) +{ + static const GLfloat st[4][2] = { + {0.0f, 0.0f}, {1.0f, 0.0f}, {1.0f, 1.0f}, {0.0f, 1.0f} + }; + GLuint i; + GLfloat r; + + switch (faceTarget) { + case GL_TEXTURE_1D: + case GL_TEXTURE_2D: + case GL_TEXTURE_3D: + case GL_TEXTURE_2D_ARRAY: + if (faceTarget == GL_TEXTURE_3D) + r = 1.0F / slice; + else if (faceTarget == GL_TEXTURE_2D_ARRAY) + r = slice; + else + r = 0.0F; + coords0[0] = 0.0F; /* s */ + coords0[1] = 0.0F; /* t */ + coords0[2] = r; /* r */ + coords1[0] = 1.0F; + coords1[1] = 0.0F; + coords1[2] = r; + coords2[0] = 1.0F; + coords2[1] = 1.0F; + coords2[2] = r; + coords3[0] = 0.0F; + coords3[1] = 1.0F; + coords3[2] = r; + break; + case GL_TEXTURE_RECTANGLE_ARB: + coords0[0] = 0.0F; /* s */ + coords0[1] = 0.0F; /* t */ + coords0[2] = 0.0F; /* r */ + coords1[0] = width; + coords1[1] = 0.0F; + coords1[2] = 0.0F; + coords2[0] = width; + coords2[1] = height; + coords2[2] = 0.0F; + coords3[0] = 0.0F; + coords3[1] = height; + coords3[2] = 0.0F; + break; + case GL_TEXTURE_1D_ARRAY: + coords0[0] = 0.0F; /* s */ + coords0[1] = slice; /* t */ + coords0[2] = 0.0F; /* r */ + coords1[0] = 1.0f; + coords1[1] = slice; + coords1[2] = 0.0F; + coords2[0] = 1.0F; + coords2[1] = slice; + coords2[2] = 0.0F; + coords3[0] = 0.0F; + coords3[1] = slice; + coords3[2] = 0.0F; + break; + + case GL_TEXTURE_CUBE_MAP_POSITIVE_X: + case GL_TEXTURE_CUBE_MAP_NEGATIVE_X: + case GL_TEXTURE_CUBE_MAP_POSITIVE_Y: + case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y: + case GL_TEXTURE_CUBE_MAP_POSITIVE_Z: + case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z: + /* loop over quad verts */ + for (i = 0; i < 4; i++) { + /* Compute sc = +/-scale and tc = +/-scale. + * Not +/-1 to avoid cube face selection ambiguity near the edges, + * though that can still sometimes happen with this scale factor... + */ + const GLfloat scale = 0.9999f; + const GLfloat sc = (2.0f * st[i][0] - 1.0f) * scale; + const GLfloat tc = (2.0f * st[i][1] - 1.0f) * scale; + GLfloat *coord; + + switch (i) { + case 0: + coord = coords0; + break; + case 1: + coord = coords1; + break; + case 2: + coord = coords2; + break; + case 3: + coord = coords3; + break; + default: + assert(0); + } + + switch (faceTarget) { + case GL_TEXTURE_CUBE_MAP_POSITIVE_X: + coord[0] = 1.0f; + coord[1] = -tc; + coord[2] = -sc; + break; + case GL_TEXTURE_CUBE_MAP_NEGATIVE_X: + coord[0] = -1.0f; + coord[1] = -tc; + coord[2] = sc; + break; + case GL_TEXTURE_CUBE_MAP_POSITIVE_Y: + coord[0] = sc; + coord[1] = 1.0f; + coord[2] = tc; + break; + case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y: + coord[0] = sc; + coord[1] = -1.0f; + coord[2] = -tc; + break; + case GL_TEXTURE_CUBE_MAP_POSITIVE_Z: + coord[0] = sc; + coord[1] = -tc; + coord[2] = 1.0f; + break; + case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z: + coord[0] = -sc; + coord[1] = -tc; + coord[2] = -1.0f; + break; + default: + assert(0); + } + } + break; + default: + assert(0 && "unexpected target in meta setup_texture_coords()"); + } +} + + +/** * Called via ctx->Driver.GenerateMipmap() * Note: We don't yet support 3D textures, 1D/2D array textures or texture * borders. @@ -2487,7 +2655,7 @@ _mesa_meta_GenerateMipmap(struct gl_context *ctx, GLenum target, { struct gen_mipmap_state *mipmap = &ctx->Meta->Mipmap; struct vertex { - GLfloat x, y, s, t, r; + GLfloat x, y, tex[3]; }; struct vertex verts[4]; const GLuint baseLevel = texObj->BaseLevel; @@ -2503,7 +2671,8 @@ _mesa_meta_GenerateMipmap(struct gl_context *ctx, GLenum target, const GLuint original_active_unit = ctx->Texture.CurrentUnit; GLenum faceTarget; GLuint dstLevel; - GLuint border = 0; + const GLuint border = 0; + const GLint slice = 0; if (_mesa_meta_check_generate_mipmap_fallback(ctx, target, texObj)) { _mesa_generate_mipmap(ctx, target, texObj); @@ -2539,7 +2708,7 @@ _mesa_meta_GenerateMipmap(struct gl_context *ctx, GLenum target, /* setup vertex arrays */ _mesa_VertexPointer(2, GL_FLOAT, sizeof(struct vertex), OFFSET(x)); - _mesa_TexCoordPointer(3, GL_FLOAT, sizeof(struct vertex), OFFSET(s)); + _mesa_TexCoordPointer(3, GL_FLOAT, sizeof(struct vertex), OFFSET(tex)); _mesa_EnableClientState(GL_VERTEX_ARRAY); _mesa_EnableClientState(GL_TEXTURE_COORD_ARRAY); } @@ -2562,98 +2731,27 @@ _mesa_meta_GenerateMipmap(struct gl_context *ctx, GLenum target, _mesa_set_enable(ctx, target, GL_TRUE); - /* setup texcoords once (XXX what about border?) */ - switch (faceTarget) { - case GL_TEXTURE_1D: - case GL_TEXTURE_2D: - verts[0].s = 0.0F; - verts[0].t = 0.0F; - verts[0].r = 0.0F; - verts[1].s = 1.0F; - verts[1].t = 0.0F; - verts[1].r = 0.0F; - verts[2].s = 1.0F; - verts[2].t = 1.0F; - verts[2].r = 0.0F; - verts[3].s = 0.0F; - verts[3].t = 1.0F; - verts[3].r = 0.0F; - break; - case GL_TEXTURE_3D: - abort(); - break; - default: - /* cube face */ - { - static const GLfloat st[4][2] = { - {0.0f, 0.0f}, {1.0f, 0.0f}, {1.0f, 1.0f}, {0.0f, 1.0f} - }; - GLuint i; - - /* loop over quad verts */ - for (i = 0; i < 4; i++) { - /* Compute sc = +/-scale and tc = +/-scale. - * Not +/-1 to avoid cube face selection ambiguity near the edges, - * though that can still sometimes happen with this scale factor... - */ - const GLfloat scale = 0.9999f; - const GLfloat sc = (2.0f * st[i][0] - 1.0f) * scale; - const GLfloat tc = (2.0f * st[i][1] - 1.0f) * scale; - - switch (faceTarget) { - case GL_TEXTURE_CUBE_MAP_POSITIVE_X: - verts[i].s = 1.0f; - verts[i].t = -tc; - verts[i].r = -sc; - break; - case GL_TEXTURE_CUBE_MAP_NEGATIVE_X: - verts[i].s = -1.0f; - verts[i].t = -tc; - verts[i].r = sc; - break; - case GL_TEXTURE_CUBE_MAP_POSITIVE_Y: - verts[i].s = sc; - verts[i].t = 1.0f; - verts[i].r = tc; - break; - case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y: - verts[i].s = sc; - verts[i].t = -1.0f; - verts[i].r = -tc; - break; - case GL_TEXTURE_CUBE_MAP_POSITIVE_Z: - verts[i].s = sc; - verts[i].t = -tc; - verts[i].r = 1.0f; - break; - case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z: - verts[i].s = -sc; - verts[i].t = -tc; - verts[i].r = -1.0f; - break; - default: - assert(0); - } - } - } - } - - _mesa_set_enable(ctx, target, GL_TRUE); + /* setup texcoords (XXX what about border?) */ + setup_texture_coords(faceTarget, + 0.0, 0.0, /* width, height never used here */ + slice, + verts[0].tex, + verts[1].tex, + verts[2].tex, + verts[3].tex); /* setup vertex positions */ - { - verts[0].x = 0.0F; - verts[0].y = 0.0F; - verts[1].x = 1.0F; - verts[1].y = 0.0F; - verts[2].x = 1.0F; - verts[2].y = 1.0F; - verts[3].x = 0.0F; - verts[3].y = 1.0F; + verts[0].x = 0.0F; + verts[0].y = 0.0F; + verts[1].x = 1.0F; + verts[1].y = 0.0F; + verts[2].x = 1.0F; + verts[2].y = 1.0F; + verts[3].x = 0.0F; + verts[3].y = 1.0F; - /* upload new vertex data */ - _mesa_BufferSubDataARB(GL_ARRAY_BUFFER_ARB, 0, sizeof(verts), verts); - } + /* upload new vertex data */ + _mesa_BufferSubDataARB(GL_ARRAY_BUFFER_ARB, 0, sizeof(verts), verts); /* setup projection matrix */ _mesa_MatrixMode(GL_PROJECTION); @@ -2939,3 +3037,213 @@ _mesa_meta_CopyTexSubImage3D(struct gl_context *ctx, GLenum target, GLint level, copy_tex_sub_image(ctx, 3, target, level, xoffset, yoffset, zoffset, x, y, width, height); } + + +/** + * Decompress a texture image by drawing a quad with the compressed + * texture and reading the pixels out of the color buffer. + * \param slice which slice of a 3D texture or layer of a 1D/2D texture + * \param destFormat format, ala glReadPixels + * \param destType type, ala glReadPixels + * \param dest destination buffer + * \param destRowLength dest image rowLength (ala GL_PACK_ROW_LENGTH) + */ +static void +decompress_texture_image(struct gl_context *ctx, + struct gl_texture_image *texImage, + GLuint slice, + GLenum destFormat, GLenum destType, + GLvoid *dest, GLint destRowLength) +{ + struct decompress_state *decompress = &ctx->Meta->Decompress; + struct gl_texture_object *texObj = texImage->TexObject; + const GLint width = texImage->Width; + const GLint height = texImage->Height; + const GLenum target = texObj->Target; + GLenum faceTarget; + struct vertex { + GLfloat x, y, tex[3]; + }; + struct vertex verts[4]; + GLuint fboDrawSave, fboReadSave; + + if (slice > 0) { + assert(target == GL_TEXTURE_3D || + target == GL_TEXTURE_2D_ARRAY); + } + + if (target == GL_TEXTURE_CUBE_MAP) { + faceTarget = GL_TEXTURE_CUBE_MAP_POSITIVE_X + texImage->Face; + } + else { + faceTarget = target; + } + + /* save fbo bindings (not saved by _mesa_meta_begin()) */ + fboDrawSave = ctx->DrawBuffer->Name; + fboReadSave = ctx->ReadBuffer->Name; + + _mesa_meta_begin(ctx, MESA_META_ALL); + + /* Create/bind FBO/renderbuffer */ + if (decompress->FBO == 0) { + _mesa_GenFramebuffersEXT(1, &decompress->FBO); + _mesa_GenRenderbuffersEXT(1, &decompress->RBO); + _mesa_BindFramebufferEXT(GL_FRAMEBUFFER_EXT, decompress->FBO); + _mesa_BindRenderbufferEXT(GL_RENDERBUFFER_EXT, decompress->RBO); + _mesa_FramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, + GL_COLOR_ATTACHMENT0_EXT, + GL_RENDERBUFFER_EXT, + decompress->RBO); + } + else { + _mesa_BindFramebufferEXT(GL_FRAMEBUFFER_EXT, decompress->FBO); + } + + /* alloc dest surface */ + if (width != decompress->Width || height != decompress->Height) { + _mesa_RenderbufferStorageEXT(GL_RENDERBUFFER_EXT, GL_RGBA, + width, height); + decompress->Width = width; + decompress->Height = height; + } + + /* setup VBO data */ + if (decompress->ArrayObj == 0) { + /* create vertex array object */ + _mesa_GenVertexArrays(1, &decompress->ArrayObj); + _mesa_BindVertexArray(decompress->ArrayObj); + + /* create vertex array buffer */ + _mesa_GenBuffersARB(1, &decompress->VBO); + _mesa_BindBufferARB(GL_ARRAY_BUFFER_ARB, decompress->VBO); + _mesa_BufferDataARB(GL_ARRAY_BUFFER_ARB, sizeof(verts), + NULL, GL_DYNAMIC_DRAW_ARB); + + /* setup vertex arrays */ + _mesa_VertexPointer(2, GL_FLOAT, sizeof(struct vertex), OFFSET(x)); + _mesa_TexCoordPointer(3, GL_FLOAT, sizeof(struct vertex), OFFSET(tex)); + _mesa_EnableClientState(GL_VERTEX_ARRAY); + _mesa_EnableClientState(GL_TEXTURE_COORD_ARRAY); + } + else { + _mesa_BindVertexArray(decompress->ArrayObj); + _mesa_BindBufferARB(GL_ARRAY_BUFFER_ARB, decompress->VBO); + } + + setup_texture_coords(faceTarget, slice, width, height, + verts[0].tex, + verts[1].tex, + verts[2].tex, + verts[3].tex); + + /* setup vertex positions */ + verts[0].x = 0.0F; + verts[0].y = 0.0F; + verts[1].x = width; + verts[1].y = 0.0F; + verts[2].x = width; + verts[2].y = height; + verts[3].x = 0.0F; + verts[3].y = height; + + /* upload new vertex data */ + _mesa_BufferSubDataARB(GL_ARRAY_BUFFER_ARB, 0, sizeof(verts), verts); + + /* setup texture state */ + _mesa_BindTexture(target, texObj->Name); + _mesa_Enable(target); + + { + /* save texture object state */ + const GLenum minFilterSave = texObj->Sampler.MinFilter; + const GLenum magFilterSave = texObj->Sampler.MagFilter; + const GLint baseLevelSave = texObj->BaseLevel; + const GLint maxLevelSave = texObj->MaxLevel; + const GLenum wrapSSave = texObj->Sampler.WrapS; + const GLenum wrapTSave = texObj->Sampler.WrapT; + const GLenum srgbSave = texObj->Sampler.sRGBDecode; + + /* restrict sampling to the texture level of interest */ + _mesa_TexParameteri(target, GL_TEXTURE_BASE_LEVEL, texImage->Level); + _mesa_TexParameteri(target, GL_TEXTURE_MAX_LEVEL, texImage->Level); + /* nearest filtering */ + _mesa_TexParameteri(target, GL_TEXTURE_MIN_FILTER, GL_NEAREST); + _mesa_TexParameteri(target, GL_TEXTURE_MAG_FILTER, GL_NEAREST); + + /* No sRGB decode or encode.*/ + if (ctx->Extensions.EXT_texture_sRGB_decode) { + _mesa_TexParameteri(target, GL_TEXTURE_SRGB_DECODE_EXT, + GL_SKIP_DECODE_EXT); + } + if (ctx->Extensions.EXT_framebuffer_sRGB) { + _mesa_Disable(GL_FRAMEBUFFER_SRGB_EXT); + } + + /* render quad w/ texture into renderbuffer */ + _mesa_DrawArrays(GL_TRIANGLE_FAN, 0, 4); + + /* Restore texture object state, the texture binding will + * be restored by _mesa_meta_end(). + */ + _mesa_TexParameteri(target, GL_TEXTURE_MIN_FILTER, minFilterSave); + _mesa_TexParameteri(target, GL_TEXTURE_MAG_FILTER, magFilterSave); + if (target != GL_TEXTURE_RECTANGLE_ARB) { + _mesa_TexParameteri(target, GL_TEXTURE_BASE_LEVEL, baseLevelSave); + _mesa_TexParameteri(target, GL_TEXTURE_MAX_LEVEL, maxLevelSave); + } + _mesa_TexParameteri(target, GL_TEXTURE_WRAP_S, wrapSSave); + _mesa_TexParameteri(target, GL_TEXTURE_WRAP_T, wrapTSave); + if (ctx->Extensions.EXT_texture_sRGB_decode) { + _mesa_TexParameteri(target, GL_TEXTURE_SRGB_DECODE_EXT, srgbSave); + } + } + + /* read pixels from renderbuffer */ + ctx->Pack.RowLength = destRowLength; + _mesa_ReadPixels(0, 0, width, height, destFormat, destType, dest); + + _mesa_meta_end(ctx); + + /* restore fbo bindings */ + if (fboDrawSave == fboReadSave) { + _mesa_BindFramebufferEXT(GL_FRAMEBUFFER_EXT, fboDrawSave); + } + else { + _mesa_BindFramebufferEXT(GL_DRAW_FRAMEBUFFER_EXT, fboDrawSave); + _mesa_BindFramebufferEXT(GL_READ_FRAMEBUFFER_EXT, fboReadSave); + } +} + + +/** + * This is just a wrapper around _mesa_get_tex_image() and + * decompress_texture_image(). Meta functions should not be directly called + * from core Mesa. + */ +void +_mesa_meta_GetTexImage(struct gl_context *ctx, GLenum target, GLint level, + GLenum format, GLenum type, GLvoid *pixels, + struct gl_texture_object *texObj, + struct gl_texture_image *texImage) +{ + /* We can only use the decompress-with-blit method here if the texels are + * unsigned, normalized values. We could handle signed and unnormalized + * with floating point renderbuffers... + */ + if (_mesa_is_format_compressed(texImage->TexFormat) && + _mesa_get_format_datatype(texImage->TexFormat) + == GL_UNSIGNED_NORMALIZED) { + const GLuint slice = 0; /* only 2D compressed textures for now */ + /* Need to unlock the texture here to prevent deadlock... */ + _mesa_unlock_texture(ctx, texObj); + decompress_texture_image(ctx, texImage, slice, format, type, pixels, + ctx->Pack.RowLength); + /* ... and relock it */ + _mesa_lock_texture(ctx, texObj); + } + else { + _mesa_get_teximage(ctx, target, level, format, type, pixels, + texObj, texImage); + } +} diff --git a/mesalib/src/mesa/drivers/common/meta.h b/mesalib/src/mesa/drivers/common/meta.h index 9a92613c4..9d634ae56 100644 --- a/mesalib/src/mesa/drivers/common/meta.h +++ b/mesalib/src/mesa/drivers/common/meta.h @@ -121,4 +121,11 @@ _mesa_meta_CopyTexSubImage3D(struct gl_context *ctx, GLenum target, GLint level, GLint x, GLint y, GLsizei width, GLsizei height); +extern void +_mesa_meta_GetTexImage(struct gl_context *ctx, GLenum target, GLint level, + GLenum format, GLenum type, GLvoid *pixels, + struct gl_texture_object *texObj, + struct gl_texture_image *texImage); + + #endif /* META_H */ |