From 54a7115fc27c640e2b3f1a362e8e07aac220556d Mon Sep 17 00:00:00 2001 From: Chia-I Wu Date: Wed, 5 Aug 2009 16:07:19 -0600 Subject: mesa/st: Add support for binding pipe surface to texture. This commit adds functions to bind a pipe surface to a texture. This allows texturing directly from the surface. Signed-off-by: Chia-I Wu --- src/mesa/state_tracker/st_cb_texture.c | 6 ++ src/mesa/state_tracker/st_public.h | 4 +- src/mesa/state_tracker/st_texture.c | 108 ++++++++++++++++++++++++++++----- src/mesa/state_tracker/st_texture.h | 5 ++ 4 files changed, 107 insertions(+), 16 deletions(-) (limited to 'src/mesa') diff --git a/src/mesa/state_tracker/st_cb_texture.c b/src/mesa/state_tracker/st_cb_texture.c index e8d7f70ad6..90a059ca69 100644 --- a/src/mesa/state_tracker/st_cb_texture.c +++ b/src/mesa/state_tracker/st_cb_texture.c @@ -523,6 +523,12 @@ st_TexImage(GLcontext * ctx, DBG("%s target %s level %d %dx%dx%d border %d\n", __FUNCTION__, _mesa_lookup_enum_by_nr(target), level, width, height, depth, border); + /* switch to "normal" */ + if (stObj->surface_based) { + _mesa_clear_texture_object(ctx, texObj); + stObj->surface_based = GL_FALSE; + } + /* gallium does not support texture borders, strip it off */ if (border) { strip_texture_border(border, &width, &height, &depth, unpack, &unpackNB); diff --git a/src/mesa/state_tracker/st_public.h b/src/mesa/state_tracker/st_public.h index 04d3a3d7c2..a5fdac32d1 100644 --- a/src/mesa/state_tracker/st_public.h +++ b/src/mesa/state_tracker/st_public.h @@ -107,7 +107,9 @@ void st_swapbuffers(struct st_framebuffer *stfb, struct pipe_surface **front_left, struct pipe_surface **front_right); -int st_set_teximage(struct pipe_texture *pt, int target); +int st_bind_texture_surface(struct pipe_surface *ps, int target, int level, + enum pipe_format format); +int st_unbind_texture_surface(struct pipe_surface *ps, int target, int level); /** Redirect rendering into stfb's surface to a texture image */ int st_bind_teximage(struct st_framebuffer *stfb, uint surfIndex, diff --git a/src/mesa/state_tracker/st_texture.c b/src/mesa/state_tracker/st_texture.c index 10faa633ea..d58803991a 100644 --- a/src/mesa/state_tracker/st_texture.c +++ b/src/mesa/state_tracker/st_texture.c @@ -32,6 +32,7 @@ #include "st_cb_fbo.h" #include "st_inlines.h" #include "main/enums.h" +#include "main/texobj.h" #include "main/teximage.h" #include "main/texstore.h" @@ -353,25 +354,95 @@ st_texture_image_copy(struct pipe_context *pipe, } } -/** Bind a pipe surface for use as a texture image */ + +/** + * Bind a pipe surface to a texture object. After the call, + * the texture object is marked dirty and will be (re-)validated. + * + * If this is the first surface bound, the texture object is said to + * switch from normal to surface based. It will be cleared first in + * this case. + * + * \param ps pipe surface to be unbound + * \param target texture target + * \param level image level + * \param format internal format of the texture + */ int -st_set_teximage(struct pipe_texture *pt, int target) +st_bind_texture_surface(struct pipe_surface *ps, int target, int level, + enum pipe_format format) { GET_CURRENT_CONTEXT(ctx); const GLuint unit = ctx->Texture.CurrentUnit; struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit]; struct gl_texture_object *texObj; struct gl_texture_image *texImage; + struct st_texture_object *stObj; struct st_texture_image *stImage; - int internalFormat; + GLenum internalFormat; - switch (pt->format) { - case PIPE_FORMAT_A8R8G8B8_UNORM: - internalFormat = GL_RGBA8; + switch (target) { + case ST_TEXTURE_2D: + target = GL_TEXTURE_2D; + break; + case ST_TEXTURE_RECT: + target = GL_TEXTURE_RECTANGLE_ARB; break; default: return 0; - }; + } + + /* map pipe format to base format for now */ + if (pf_get_component_bits(format, PIPE_FORMAT_COMP_A) > 0) + internalFormat = GL_RGBA; + else + internalFormat = GL_RGB; + + texObj = _mesa_select_tex_object(ctx, texUnit, target); + _mesa_lock_texture(ctx, texObj); + + stObj = st_texture_object(texObj); + /* switch to surface based */ + if (!stObj->surface_based) { + _mesa_clear_texture_object(ctx, texObj); + stObj->surface_based = GL_TRUE; + } + + texImage = _mesa_get_tex_image(ctx, texObj, target, level); + stImage = st_texture_image(texImage); + + _mesa_init_teximage_fields(ctx, target, texImage, + ps->width, ps->height, 1, 0, internalFormat); + texImage->TexFormat = st_ChooseTextureFormat(ctx, internalFormat, + GL_RGBA, GL_UNSIGNED_BYTE); + _mesa_set_fetch_functions(texImage, 2); + pipe_texture_reference(&stImage->pt, ps->texture); + + _mesa_dirty_texobj(ctx, texObj, GL_TRUE); + _mesa_unlock_texture(ctx, texObj); + + return 1; +} + + +/** + * Unbind a pipe surface from a texture object. After the call, + * the texture object is marked dirty and will be (re-)validated. + * + * \param ps pipe surface to be unbound + * \param target texture target + * \param level image level + */ +int +st_unbind_texture_surface(struct pipe_surface *ps, int target, int level) +{ + GET_CURRENT_CONTEXT(ctx); + const GLuint unit = ctx->Texture.CurrentUnit; + struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit]; + struct gl_texture_object *texObj; + struct gl_texture_image *texImage; + struct st_texture_object *stObj; + struct st_texture_image *stImage; switch (target) { case ST_TEXTURE_2D: @@ -385,21 +456,28 @@ st_set_teximage(struct pipe_texture *pt, int target) } texObj = _mesa_select_tex_object(ctx, texUnit, target); - texImage = _mesa_get_tex_image(ctx, texObj, target, 0); + + _mesa_lock_texture(ctx, texObj); + + texImage = _mesa_get_tex_image(ctx, texObj, target, level); + stObj = st_texture_object(texObj); stImage = st_texture_image(texImage); - - _mesa_init_teximage_fields(ctx, GL_TEXTURE_2D, texImage, pt->width[0], - pt->height[0], 1, 0, internalFormat); - texImage->TexFormat = st_ChooseTextureFormat(ctx, internalFormat, GL_RGBA, - GL_UNSIGNED_BYTE); - _mesa_set_fetch_functions(texImage, 2); + /* Make sure the pipe surface is still bound. The texture object is still + * considered surface based even if this is the last bound surface. */ + if (stImage->pt == ps->texture) { + pipe_texture_reference(&stImage->pt, NULL); + _mesa_clear_texture_image(ctx, texImage); - pipe_texture_reference(&stImage->pt, pt); + _mesa_dirty_texobj(ctx, texObj, GL_TRUE); + } + _mesa_unlock_texture(ctx, texObj); + return 1; } + /** Redirect rendering into stfb's surface to a texture image */ int st_bind_teximage(struct st_framebuffer *stfb, uint surfIndex, diff --git a/src/mesa/state_tracker/st_texture.h b/src/mesa/state_tracker/st_texture.h index b9d447cb56..60868ce067 100644 --- a/src/mesa/state_tracker/st_texture.h +++ b/src/mesa/state_tracker/st_texture.h @@ -69,6 +69,11 @@ struct st_texture_object struct pipe_texture *pt; GLboolean teximage_realloc; + + /* True if there is/was a surface bound to this texture object. It helps + * track whether the texture object is surface based or not. + */ + GLboolean surface_based; }; -- cgit v1.2.3