diff options
| -rw-r--r-- | src/mesa/state_tracker/st_cb_texture.c | 65 |
1 files changed, 51 insertions, 14 deletions
diff --git a/src/mesa/state_tracker/st_cb_texture.c b/src/mesa/state_tracker/st_cb_texture.c index dc39a7012..74602b4ca 100644 --- a/src/mesa/state_tracker/st_cb_texture.c +++ b/src/mesa/state_tracker/st_cb_texture.c @@ -56,6 +56,7 @@ #include "pipe/p_context.h" #include "pipe/p_defines.h" #include "pipe/p_inlines.h" +#include "pipe/p_shader_tokens.h" #include "util/u_tile.h" #include "util/u_blit.h" #include "util/u_surface.h" @@ -1393,6 +1394,36 @@ fallback_copy_texsubimage(GLcontext *ctx, GLenum target, GLint level, } +static unsigned +compatible_src_dst_formats(const struct gl_renderbuffer *src, + const struct gl_texture_image *dst) +{ + const GLenum srcFormat = src->_BaseFormat; + const GLenum dstLogicalFormat = dst->_BaseFormat; + + if (srcFormat == dstLogicalFormat) { + /* This is the same as matching_base_formats, which should + * always pass, as it did previously. + */ + return TGSI_WRITEMASK_XYZW; + } + else if (srcFormat == GL_RGBA && + dstLogicalFormat == GL_RGB) { + /* Add a single special case to cope with RGBA->RGB transfers, + * setting A to 1.0 to cope with situations where the RGB + * destination is actually stored as RGBA. + */ + return TGSI_WRITEMASK_XYZ; /* A ==> 1.0 */ + } + else { + /* Otherwise fail. + */ + return 0; + } +} + + + /** * Do a CopyTex[Sub]Image1/2/3D() using a hardware (blit) path if possible. * Note that the region to copy has already been clipped so we know we @@ -1422,6 +1453,9 @@ st_copy_texsubimage(GLcontext *ctx, enum pipe_format dest_format, src_format; GLboolean use_fallback = GL_TRUE; GLboolean matching_base_formats; + GLuint format_writemask; + struct pipe_surface *dest_surface = NULL; + GLboolean do_flip = (st_fb_orientation(ctx->ReadBuffer) == Y_0_TOP); /* any rendering in progress must flushed before we grab the fb image */ st_flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL); @@ -1492,13 +1526,14 @@ st_copy_texsubimage(GLcontext *ctx, * textured-quad paths. */ matching_base_formats = (strb->Base._BaseFormat == texImage->_BaseFormat); + format_writemask = compatible_src_dst_formats(&strb->Base, texImage); - if (matching_base_formats && ctx->_ImageTransferState == 0x0) { - /* try potential hardware path */ - struct pipe_surface *dest_surface = NULL; - boolean do_flip = (st_fb_orientation(ctx->ReadBuffer) == Y_0_TOP); + if (ctx->_ImageTransferState == 0x0) { - if (src_format == dest_format && !do_flip) { + if (matching_base_formats && + src_format == dest_format && + !do_flip) + { /* use surface_copy() / blit */ dest_surface = screen->get_tex_surface(screen, stImage->pt, @@ -1518,7 +1553,8 @@ st_copy_texsubimage(GLcontext *ctx, width, height); use_fallback = GL_FALSE; } - else if (screen->is_format_supported(screen, src_format, + else if (format_writemask && + screen->is_format_supported(screen, src_format, PIPE_TEXTURE_2D, PIPE_TEXTURE_USAGE_SAMPLER, 0) && @@ -1542,14 +1578,15 @@ st_copy_texsubimage(GLcontext *ctx, srcY0 = srcY; srcY1 = srcY0 + height; } - util_blit_pixels(ctx->st->blit, - strb->surface, - srcX, srcY0, - srcX + width, srcY1, - dest_surface, - destX, destY, - destX + width, destY + height, - 0.0, PIPE_TEX_MIPFILTER_NEAREST); + util_blit_pixels_writemask(ctx->st->blit, + strb->surface, + srcX, srcY0, + srcX + width, srcY1, + dest_surface, + destX, destY, + destX + width, destY + height, + 0.0, PIPE_TEX_MIPFILTER_NEAREST, + format_writemask); use_fallback = GL_FALSE; } |