diff options
Diffstat (limited to 'src/mesa')
| -rw-r--r-- | src/mesa/main/dd.h | 46 | ||||
| -rw-r--r-- | src/mesa/main/teximage.c | 274 |
2 files changed, 262 insertions, 58 deletions
diff --git a/src/mesa/main/dd.h b/src/mesa/main/dd.h index fd6874cd3d3..60f3bcdefad 100644 --- a/src/mesa/main/dd.h +++ b/src/mesa/main/dd.h @@ -1,4 +1,4 @@ -/* $Id: dd.h,v 1.17 2000/03/07 18:24:49 brianp Exp $ */ +/* $Id: dd.h,v 1.18 2000/03/20 14:37:52 brianp Exp $ */ /* * Mesa 3-D graphics library @@ -593,6 +593,50 @@ struct dd_function_table { * Called from glTexSubImage() to define a sub-region of a texture. */ + GLboolean (*CopyTexImage1D)( GLcontext *ctx, GLenum target, GLint level, + GLenum internalFormat, GLint x, GLint y, + GLsizei width, GLint border ); + GLboolean (*CopyTexImage2D)( GLcontext *ctx, GLenum target, GLint level, + GLenum internalFormat, GLint x, GLint y, + GLsizei width, GLsizei height, GLint border ); + /* Called by glCopyTexImage1D and glCopyTexImage2D. + * Will not be called if any glPixelTransfer operations are enabled. + * Return GL_TRUE if operation completed, return GL_FALSE if core Mesa + * should do the job. + */ + + GLboolean (*CopyTexSubImage1D)( GLcontext *ctx, GLenum target, GLint level, + GLint xoffset, + GLint x, GLint y, GLsizei width ); + GLboolean (*CopyTexSubImage2D)( GLcontext *ctx, GLenum target, GLint level, + GLint xoffset, GLint yoffset, + GLint x, GLint y, + GLsizei width, GLsizei height ); + GLboolean (*CopyTexSubImage3D)( GLcontext *ctx, GLenum target, GLint level, + GLint xoffset, GLint yoffset, GLint zoffset, + GLint x, GLint y, + GLsizei width, GLsizei height ); + /* Called by glCopyTexSubImage1/2/3D. + * Will not be called if any glPixelTransfer operations are enabled. + * Return GL_TRUE if operation completed, return GL_FALSE if core Mesa + * should do the job. + */ + + GLvoid *(*GetTexImage)( GLcontext *ctx, GLenum target, GLint level, + GLenum *formatOut, GLenum *typeOut, + GLboolean *freeImageOut ); + /* Called by glGetTexImage or by core Mesa when a texture image + * is needed for software fallback rendering. + * Return the address of the texture image or NULL if failure. + * The image must be tightly packed (i.e. row stride = image width) + * Return the image's format and type in formatOut and typeOut. + * The format and type must be values which are accepted by glTexImage. + * Set the freeImageOut flag if the returned image should be deallocated + * with FREE() when finished. + * The size of the image can be deduced from the target and level. + * Core Mesa will perform any image format/type conversions that are needed. + */ + void (*TexParameter)( GLcontext *ctx, GLenum target, struct gl_texture_object *tObj, GLenum pname, const GLfloat *params ); diff --git a/src/mesa/main/teximage.c b/src/mesa/main/teximage.c index a38d0c5a6df..63dfd053dff 100644 --- a/src/mesa/main/teximage.c +++ b/src/mesa/main/teximage.c @@ -1,4 +1,4 @@ -/* $Id: teximage.c,v 1.19 2000/03/19 01:10:12 brianp Exp $ */ +/* $Id: teximage.c,v 1.20 2000/03/20 14:37:54 brianp Exp $ */ /* * Mesa 3-D graphics library @@ -50,6 +50,21 @@ */ +/* + * Default pixel packing of Mesa's internal texture images: + */ +static struct gl_pixelstore_attrib DefaultPacking = { + 1, /* Alignment */ + 0, /* RowLength */ + 0, /* SkipPixels */ + 0, /* SkipRows */ + 0, /* ImageHeight */ + 0, /* SkipImages */ + GL_FALSE, /* SwapBytes */ + GL_FALSE /* LsbFirst */ +}; + + /* * Compute log base 2 of n. @@ -1034,17 +1049,19 @@ _mesa_TexImage1D( GLenum target, GLint level, GLint internalformat, GLenum type, const GLvoid *pixels ) { GET_CURRENT_CONTEXT(ctx); - struct gl_texture_unit *texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit]; ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glTexImage1D"); if (target==GL_TEXTURE_1D) { + struct gl_texture_unit *texUnit; struct gl_texture_image *teximage; + if (texture_error_check( ctx, target, level, internalformat, format, type, 1, width, 1, 1, border )) { - /* error in texture image was detected */ - return; + return; /* error in texture image was detected */ } + texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit]; + /* free current texture image, if any */ if (texUnit->CurrentD[1]->Image[level]) { gl_free_texture_image( texUnit->CurrentD[1]->Image[level] ); @@ -1105,17 +1122,19 @@ _mesa_TexImage2D( GLenum target, GLint level, GLint internalformat, const GLvoid *pixels ) { GET_CURRENT_CONTEXT(ctx); - struct gl_texture_unit *texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit]; ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glTexImage2D"); if (target==GL_TEXTURE_2D) { + struct gl_texture_unit *texUnit; struct gl_texture_image *teximage; + if (texture_error_check( ctx, target, level, internalformat, format, type, 2, width, height, 1, border )) { - /* error in texture image was detected */ - return; + return; /* error in texture image was detected */ } + texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit]; + /* free current texture image, if any */ if (texUnit->CurrentD[2]->Image[level]) { gl_free_texture_image( texUnit->CurrentD[2]->Image[level] ); @@ -1181,18 +1200,19 @@ _mesa_TexImage3D( GLenum target, GLint level, GLint internalformat, const GLvoid *pixels ) { GET_CURRENT_CONTEXT(ctx); - struct gl_texture_unit *texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit]; - ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glTexImage3DEXT"); + ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glTexImage3D"); if (target==GL_TEXTURE_3D_EXT) { + struct gl_texture_unit *texUnit; struct gl_texture_image *teximage; if (texture_error_check( ctx, target, level, internalformat, format, type, 3, width, height, depth, border )) { - /* error in texture image was detected */ - return; + return; /* error in texture image was detected */ } + texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit]; + /* free current texture image, if any */ if (texUnit->CurrentD[3]->Image[level]) { gl_free_texture_image( texUnit->CurrentD[3]->Image[level] ); @@ -1258,6 +1278,96 @@ _mesa_TexImage3DEXT( GLenum target, GLint level, GLenum internalformat, } +/* + * Fetch a texture image from the device driver. + * Store the results in the given texture object at the given mipmap level. + */ +static void +get_teximage_from_driver( GLcontext *ctx, GLenum target, GLint level, + const struct gl_texture_object *texObj ) +{ + GLvoid *image; + GLenum imgFormat, imgType; + GLboolean freeImage; + struct gl_texture_image *texImage; + GLint destComponents, numPixels, srcBytesPerTexel; + + if (!ctx->Driver.GetTexImage) + return; + + image = (*ctx->Driver.GetTexImage)( ctx, target, level, + &imgFormat, &imgType, &freeImage); + if (!image) + return; + + texImage = texObj->Image[level]; + ASSERT(texImage); + if (!texImage) + return; + + destComponents = components_in_intformat(texImage->Format); + assert(destComponents > 0); + numPixels = texImage->Width * texImage->Height * texImage->Depth; + assert(numPixels > 0); + srcBytesPerTexel = gl_bytes_per_pixel(imgFormat, imgType); + assert(srcBytesPerTexel > 0); + + if (!texImage->Data) { + /* Allocate memory for the texture image data */ + texImage->Data = (GLubyte *) MALLOC(numPixels * destComponents + EXTRA_BYTE); + } + + if (imgFormat == texImage->Format && imgType == GL_UNSIGNED_BYTE) { + /* We got lucky! The driver's format and type match Mesa's format. */ + if (texImage->Data) { + MEMCPY(texImage->Data, image, numPixels * destComponents); + } + } + else { + /* Convert the texture image from the driver's format to Mesa's + * internal format. + */ + const GLint width = texImage->Width; + const GLint height = texImage->Height; + const GLint depth = texImage->Depth; + const GLint destBytesPerRow = width * destComponents * sizeof(GLchan); + const GLint srcBytesPerRow = width * srcBytesPerTexel; + const GLenum dstType = GL_UNSIGNED_BYTE; + const GLenum dstFormat = texImage->Format; + const GLubyte *srcPtr = (const GLubyte *) image; + GLubyte *destPtr = texImage->Data; + + if (texImage->Format == GL_COLOR_INDEX) { + /* color index texture */ + GLint img, row; + assert(imgFormat == GL_COLOR_INDEX); + for (img = 0; img < depth; img++) { + for (row = 0; row < height; row++) { + _mesa_unpack_index_span(ctx, width, dstType, destPtr, + imgType, srcPtr, &DefaultPacking, GL_FALSE); + destPtr += destBytesPerRow; + srcPtr += srcBytesPerRow; + } + } + } + else { + /* color texture */ + GLint img, row; + for (img = 0; img < depth; img++) { + for (row = 0; row < height; row++) { + _mesa_unpack_ubyte_color_span(ctx, width, dstFormat, destPtr, + imgFormat, imgType, srcPtr, &DefaultPacking, GL_FALSE); + destPtr += destBytesPerRow; + srcPtr += srcBytesPerRow; + } + } + } + } + + if (freeImage) + FREE(image); +} + void _mesa_GetTexImage( GLenum target, GLint level, GLenum format, @@ -1265,6 +1375,8 @@ _mesa_GetTexImage( GLenum target, GLint level, GLenum format, { GET_CURRENT_CONTEXT(ctx); const struct gl_texture_object *texObj; + struct gl_texture_image *texImage; + GLboolean discardImage; ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glGetTexImage"); @@ -1284,7 +1396,7 @@ _mesa_GetTexImage( GLenum target, GLint level, GLenum format, } if (!pixels) - return; /* XXX generate an error??? */ + return; switch (target) { case GL_TEXTURE_1D: @@ -1301,8 +1413,22 @@ _mesa_GetTexImage( GLenum target, GLint level, GLenum format, return; } - if (texObj->Image[level] && texObj->Image[level]->Data) { - const struct gl_texture_image *texImage = texObj->Image[level]; + texImage = texObj->Image[level]; + if (!texImage) { + /* invalid mipmap level */ + return; + } + + if (!texImage->Data) { + /* try to get the texture image from the device driver */ + get_teximage_from_driver(ctx, target, level, texObj); + discardImage = GL_TRUE; + } + else { + discardImage = GL_FALSE; + } + + if (texImage->Data) { GLint width = texImage->Width; GLint height = texImage->Height; GLint row; @@ -1385,6 +1511,12 @@ _mesa_GetTexImage( GLenum target, GLint level, GLenum format, format, type, dest, &ctx->Pack, GL_TRUE ); } } + + /* if we got the teximage from the device driver we'll discard it now */ + if (discardImage) { + FREE(texImage->Data); + texImage->Data = NULL; + } } } @@ -1402,8 +1534,7 @@ _mesa_TexSubImage1D( GLenum target, GLint level, if (subtexture_error_check(ctx, 1, target, level, xoffset, 0, 0, width, 1, 1, format, type)) { - /* error was detected */ - return; + return; /* error was detected */ } destTex = texUnit->CurrentD[1]->Image[level]; @@ -1472,8 +1603,7 @@ _mesa_TexSubImage2D( GLenum target, GLint level, if (subtexture_error_check(ctx, 2, target, level, xoffset, yoffset, 0, width, height, 1, format, type)) { - /* error was detected */ - return; + return; /* error was detected */ } destTex = texUnit->CurrentD[2]->Image[level]; @@ -1555,8 +1685,7 @@ _mesa_TexSubImage3D( GLenum target, GLint level, if (subtexture_error_check(ctx, 3, target, level, xoffset, yoffset, zoffset, width, height, depth, format, type)) { - /* error was detected */ - return; + return; /* error was detected */ } destTex = texUnit->CurrentD[3]->Image[level]; @@ -1668,15 +1797,22 @@ _mesa_CopyTexImage1D( GLenum target, GLint level, GET_CURRENT_CONTEXT(ctx); ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glCopyTexImage1D"); - if (!copytexture_error_check(ctx, 1, target, level, internalFormat, - width, 1, border)) { + if (copytexture_error_check(ctx, 1, target, level, internalFormat, + width, 1, border)) + return; + + if (ctx->Pixel.MapColorFlag || ctx->Pixel.ScaleOrBiasRGBA + || !ctx->Driver.CopyTexImage1D + || !(*ctx->Driver.CopyTexImage1D)(ctx, target, level, + internalFormat, x, y, width, border)) + { GLubyte *image = read_color_image( ctx, x, y, width, 1 ); if (!image) { gl_error( ctx, GL_OUT_OF_MEMORY, "glCopyTexImage1D" ); return; } (*ctx->Exec->TexImage1D)( target, level, internalFormat, width, - border, GL_RGBA, GL_UNSIGNED_BYTE, image ); + border, GL_RGBA, GL_UNSIGNED_BYTE, image ); FREE(image); } } @@ -1691,15 +1827,22 @@ _mesa_CopyTexImage2D( GLenum target, GLint level, GLenum internalFormat, GET_CURRENT_CONTEXT(ctx); ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glCopyTexImage2D"); - if (!copytexture_error_check(ctx, 2, target, level, internalFormat, - width, height, border)) { + if (copytexture_error_check(ctx, 2, target, level, internalFormat, + width, height, border)) + return; + + if (ctx->Pixel.MapColorFlag || ctx->Pixel.ScaleOrBiasRGBA + || !ctx->Driver.CopyTexImage2D + || !(*ctx->Driver.CopyTexImage2D)(ctx, target, level, + internalFormat, x, y, width, height, border)) + { GLubyte *image = read_color_image( ctx, x, y, width, height ); if (!image) { gl_error( ctx, GL_OUT_OF_MEMORY, "glCopyTexImage2D" ); return; } (ctx->Exec->TexImage2D)( target, level, internalFormat, width, - height, border, GL_RGBA, GL_UNSIGNED_BYTE, image ); + height, border, GL_RGBA, GL_UNSIGNED_BYTE, image ); FREE(image); } } @@ -1770,8 +1913,14 @@ _mesa_CopyTexSubImage1D( GLenum target, GLint level, GET_CURRENT_CONTEXT(ctx); ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glCopyTexSubImage1D"); - if (!copytexsubimage_error_check(ctx, 1, target, level, - xoffset, 0, 0, width, 1)) { + if (copytexsubimage_error_check(ctx, 1, target, level, + xoffset, 0, 0, width, 1)) + return; + + if (ctx->Pixel.MapColorFlag || ctx->Pixel.ScaleOrBiasRGBA + || !ctx->Driver.CopyTexSubImage1D + || !(*ctx->Driver.CopyTexSubImage1D)(ctx, target, level, + xoffset, x, y, width)) { struct gl_texture_unit *texUnit; struct gl_texture_image *teximage; texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit]; @@ -1779,12 +1928,12 @@ _mesa_CopyTexSubImage1D( GLenum target, GLint level, assert(teximage); if (teximage->Data) { copy_tex_sub_image(ctx, teximage, width, 1, x, y, xoffset, 0, 0); - /* tell driver about the change */ - if (ctx->Driver.TexImage) { - (*ctx->Driver.TexImage)( ctx, GL_TEXTURE_1D, - texUnit->CurrentD[1], - level, teximage->IntFormat, teximage ); - } + /* tell driver about the change */ + if (ctx->Driver.TexImage) { + (*ctx->Driver.TexImage)( ctx, GL_TEXTURE_1D, + texUnit->CurrentD[1], + level, teximage->IntFormat, teximage ); + } } } } @@ -1799,8 +1948,14 @@ _mesa_CopyTexSubImage2D( GLenum target, GLint level, GET_CURRENT_CONTEXT(ctx); ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glCopyTexSubImage2D"); - if (!copytexsubimage_error_check(ctx, 2, target, level, - xoffset, yoffset, 0, width, height)) { + if (copytexsubimage_error_check(ctx, 2, target, level, + xoffset, yoffset, 0, width, height)) + return; + + if (ctx->Pixel.MapColorFlag || ctx->Pixel.ScaleOrBiasRGBA + || !ctx->Driver.CopyTexSubImage2D + || !(*ctx->Driver.CopyTexSubImage2D)(ctx, target, level, + xoffset, yoffset, x, y, width, height )) { struct gl_texture_unit *texUnit; struct gl_texture_image *teximage; texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit]; @@ -1809,11 +1964,11 @@ _mesa_CopyTexSubImage2D( GLenum target, GLint level, if (teximage->Data) { copy_tex_sub_image(ctx, teximage, width, height, x, y, xoffset, yoffset, 0); - /* tell driver about the change */ - if (ctx->Driver.TexImage) { - (*ctx->Driver.TexImage)( ctx, GL_TEXTURE_2D, - texUnit->CurrentD[2], - level, teximage->IntFormat, teximage ); + /* tell driver about the change */ + if (ctx->Driver.TexImage) { + (*ctx->Driver.TexImage)( ctx, GL_TEXTURE_2D, + texUnit->CurrentD[2], + level, teximage->IntFormat, teximage ); } } } @@ -1829,23 +1984,28 @@ _mesa_CopyTexSubImage3D( GLenum target, GLint level, GET_CURRENT_CONTEXT(ctx); ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glCopyTexSubImage3D"); - if (!copytexsubimage_error_check(ctx, 3, target, level, - xoffset, yoffset, zoffset, width, height)) { - struct gl_texture_unit *texUnit; - struct gl_texture_image *teximage; - texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit]; - teximage = texUnit->CurrentD[3]->Image[level]; - assert(teximage); - if (teximage->Data) { - copy_tex_sub_image(ctx, teximage, width, height, + if (copytexsubimage_error_check(ctx, 3, target, level, + xoffset, yoffset, zoffset, width, height)) + return; + + if (ctx->Pixel.MapColorFlag || ctx->Pixel.ScaleOrBiasRGBA + || !ctx->Driver.CopyTexSubImage3D + || !(*ctx->Driver.CopyTexSubImage3D)(ctx, target, level, + xoffset, yoffset, zoffset, x, y, width, height )) { + struct gl_texture_unit *texUnit; + struct gl_texture_image *teximage; + texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit]; + teximage = texUnit->CurrentD[3]->Image[level]; + assert(teximage); + if (teximage->Data) { + copy_tex_sub_image(ctx, teximage, width, height, x, y, xoffset, yoffset, zoffset); - /* tell driver about the change */ - if (ctx->Driver.TexImage) { - (*ctx->Driver.TexImage)( ctx, GL_TEXTURE_3D, - texUnit->CurrentD[3], - level, teximage->IntFormat, teximage ); - } + /* tell driver about the change */ + if (ctx->Driver.TexImage) { + (*ctx->Driver.TexImage)( ctx, GL_TEXTURE_3D, + texUnit->CurrentD[3], + level, teximage->IntFormat, teximage ); + } } } } - |