diff options
Diffstat (limited to 'src/mesa')
| -rw-r--r-- | src/mesa/main/mipmap.c | 117 | ||||
| -rw-r--r-- | src/mesa/main/mipmap.h | 11 |
2 files changed, 81 insertions, 47 deletions
diff --git a/src/mesa/main/mipmap.c b/src/mesa/main/mipmap.c index b3e40c2da98..9d57f424fd4 100644 --- a/src/mesa/main/mipmap.c +++ b/src/mesa/main/mipmap.c @@ -843,6 +843,70 @@ make_2d_stack_mipmap(GLenum datatype, GLuint comps, GLint border, /** + * Down-sample a texture image to produce the next lower mipmap level. + */ +void +_mesa_generate_mipmap_level(GLenum target, + GLenum datatype, GLuint comps, + GLint border, + GLint srcWidth, GLint srcHeight, GLint srcDepth, + const GLubyte *srcData, + GLint srcRowStride, + GLint dstWidth, GLint dstHeight, GLint dstDepth, + GLubyte *dstData, + GLint dstRowStride) +{ + /* + * We use simple 2x2 averaging to compute the next mipmap level. + */ + switch (target) { + case GL_TEXTURE_1D: + make_1d_mipmap(datatype, comps, border, + srcWidth, srcData, + dstWidth, dstData); + break; + case GL_TEXTURE_2D: + case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB: + case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB: + case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB: + case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB: + case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB: + case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB: + make_2d_mipmap(datatype, comps, border, + srcWidth, srcHeight, srcData, srcRowStride, + dstWidth, dstHeight, dstData, dstRowStride); + break; + case GL_TEXTURE_3D: + make_3d_mipmap(datatype, comps, border, + srcWidth, srcHeight, srcDepth, + srcData, srcRowStride, + dstWidth, dstHeight, dstDepth, + dstData, dstRowStride); + break; + case GL_TEXTURE_1D_ARRAY_EXT: + make_1d_stack_mipmap(datatype, comps, border, + srcWidth, srcData, srcRowStride, + dstWidth, dstHeight, + dstData, dstRowStride); + break; + case GL_TEXTURE_2D_ARRAY_EXT: + make_2d_stack_mipmap(datatype, comps, border, + srcWidth, srcHeight, + srcData, srcRowStride, + dstWidth, dstHeight, + dstDepth, dstData, dstRowStride); + break; + case GL_TEXTURE_RECTANGLE_NV: + /* no mipmaps, do nothing */ + break; + default: + _mesa_problem(ctx, "bad dimensions in _mesa_generate_mipmaps"); + return; + } +} + + +/** * For GL_SGIX_generate_mipmap: * Generate a complete set of mipmaps from texObj's base-level image. * Stop at texObj's MaxLevel or when we get to the 1x1 texture. @@ -1034,53 +1098,12 @@ _mesa_generate_mipmap(GLcontext *ctx, GLenum target, dstData = (GLubyte *) dstImage->Data; } - /* - * We use simple 2x2 averaging to compute the next mipmap level. - */ - switch (target) { - case GL_TEXTURE_1D: - make_1d_mipmap(datatype, comps, border, - srcWidth, srcData, - dstWidth, dstData); - break; - case GL_TEXTURE_2D: - case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB: - case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB: - case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB: - case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB: - case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB: - case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB: - make_2d_mipmap(datatype, comps, border, - srcWidth, srcHeight, srcData, srcImage->RowStride, - dstWidth, dstHeight, dstData, dstImage->RowStride); - break; - case GL_TEXTURE_3D: - make_3d_mipmap(datatype, comps, border, - srcWidth, srcHeight, srcDepth, - srcData, srcImage->RowStride, - dstWidth, dstHeight, dstDepth, - dstData, dstImage->RowStride); - break; - case GL_TEXTURE_1D_ARRAY_EXT: - make_1d_stack_mipmap(datatype, comps, border, - srcWidth, srcData, srcImage->RowStride, - dstWidth, dstHeight, - dstData, dstImage->RowStride); - break; - case GL_TEXTURE_2D_ARRAY_EXT: - make_2d_stack_mipmap(datatype, comps, border, - srcWidth, srcHeight, - srcData, srcImage->RowStride, - dstWidth, dstHeight, - dstDepth, dstData, dstImage->RowStride); - break; - case GL_TEXTURE_RECTANGLE_NV: - /* no mipmaps, do nothing */ - break; - default: - _mesa_problem(ctx, "bad dimensions in _mesa_generate_mipmaps"); - return; - } + _mesa_generate_mipmap_level(target, datatype, comps, border, + srcWidth, srcHeight, srcDepth, + srcData, srcImage->RowStride, + dstWidth, dstHeight, dstDepth, + dstData, dstImage->RowStride); + if (dstImage->IsCompressed) { GLubyte *temp; diff --git a/src/mesa/main/mipmap.h b/src/mesa/main/mipmap.h index 46e16902c86..b6491f55073 100644 --- a/src/mesa/main/mipmap.h +++ b/src/mesa/main/mipmap.h @@ -28,6 +28,17 @@ #include "mtypes.h" + +extern void +_mesa_generate_mipmap_level(GLenum target, + GLenum datatype, GLuint comps, + GLint border, + GLint srcWidth, GLint srcHeight, GLint srcDepth, + const GLubyte *srcData, + GLint dstWidth, GLint dstHeight, GLint dstDepth, + GLubyte *dstData); + + extern void _mesa_generate_mipmap(GLcontext *ctx, GLenum target, struct gl_texture_object *texObj); |