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path: root/src/mesa/state_tracker/st_cb_texture.c
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Diffstat (limited to 'src/mesa/state_tracker/st_cb_texture.c')
-rw-r--r--src/mesa/state_tracker/st_cb_texture.c118
1 files changed, 84 insertions, 34 deletions
diff --git a/src/mesa/state_tracker/st_cb_texture.c b/src/mesa/state_tracker/st_cb_texture.c
index 202b69f59dc..147ca5b1a2f 100644
--- a/src/mesa/state_tracker/st_cb_texture.c
+++ b/src/mesa/state_tracker/st_cb_texture.c
@@ -932,16 +932,6 @@ fallback_copy_texsubimage(GLcontext *ctx,
const uint face = texture_face(target);
struct pipe_texture *pt = stImage->pt;
struct pipe_surface *src_surf, *dest_surf;
- GLint row, yStep;
-
- /* determine bottom-to-top vs. top-to-bottom order for src renderbuffer */
- if (st_fb_orientation(ctx->ReadBuffer) == Y_0_TOP) {
- srcY = strb->Base.Height - 1 - srcY;
- yStep = -1;
- }
- else {
- yStep = 1;
- }
src_surf = strb->surface;
dest_surf = screen->get_tex_surface(screen, pt, face, level, destZ,
@@ -949,13 +939,21 @@ fallback_copy_texsubimage(GLcontext *ctx,
assert(width <= MAX_WIDTH);
- /*
- * To avoid a large temp memory allocation, do copy row by row.
- */
if (baseFormat == GL_DEPTH_COMPONENT) {
const GLboolean scaleOrBias = (ctx->Pixel.DepthScale != 1.0F ||
ctx->Pixel.DepthBias != 0.0F);
+ GLint row, yStep;
+ /* determine bottom-to-top vs. top-to-bottom order for src buffer */
+ if (st_fb_orientation(ctx->ReadBuffer) == Y_0_TOP) {
+ srcY = strb->Base.Height - 1 - srcY;
+ yStep = -1;
+ }
+ else {
+ yStep = 1;
+ }
+
+ /* To avoid a large temp memory allocation, do copy row by row */
for (row = 0; row < height; row++, srcY += yStep, destY++) {
uint data[MAX_WIDTH];
pipe_get_tile_z(src_surf, srcX, srcY, width, 1, data);
@@ -967,17 +965,54 @@ fallback_copy_texsubimage(GLcontext *ctx,
}
else {
/* RGBA format */
- for (row = 0; row < height; row++, srcY += yStep, destY++) {
- float data[4 * MAX_WIDTH];
- pipe_get_tile_rgba(src_surf, srcX, srcY, width, 1, data);
- /* XXX we're ignoring convolution for now */
- if (ctx->_ImageTransferState) {
- _mesa_apply_rgba_transfer_ops(ctx,
- ctx->_ImageTransferState & ~IMAGE_CONVOLUTION_BIT,
- width, (GLfloat (*)[4]) data);
+ GLfloat *tempSrc =
+ (GLfloat *) _mesa_malloc(width * height * 4 * sizeof(GLfloat));
+ GLvoid *texDest =
+ st_texture_image_map(ctx->st, stImage, 0,PIPE_BUFFER_USAGE_CPU_WRITE);
+
+ if (tempSrc && texDest) {
+ const GLint dims = 2;
+ struct gl_texture_image *texImage = &stImage->base;
+ GLint dstRowStride = stImage->surface->stride;
+ struct gl_pixelstore_attrib unpack = ctx->DefaultPacking;
+
+ if (st_fb_orientation(ctx->ReadBuffer) == Y_0_TOP) {
+ /* need to invert src */
+ srcY = strb->Base.Height - srcY - height;
+ unpack.Invert = GL_TRUE;
}
- pipe_put_tile_rgba(dest_surf, destX, destY, width, 1, data);
+
+ /* get float/RGBA image from framebuffer */
+ /* XXX this usually involves a lot of int/float conversion.
+ * try to avoid that someday.
+ */
+ pipe_get_tile_rgba(src_surf, srcX, srcY, width, height, tempSrc);
+
+ /* Store into texture memory.
+ * Note that this does some special things such as pixel transfer
+ * ops and format conversion. In particular, if the dest tex format
+ * is actually RGBA but the user created the texture as GL_RGB we
+ * need to fill-in/override the alpha channel with 1.0.
+ */
+ texImage->TexFormat->StoreImage(ctx, dims,
+ texImage->_BaseFormat,
+ texImage->TexFormat,
+ texDest,
+ destX, destY, destZ,
+ dstRowStride,
+ texImage->ImageOffsets,
+ width, height, 1,
+ GL_RGBA, GL_FLOAT, tempSrc, /* src */
+ &unpack);
}
+ else {
+ _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexSubImage");
+ }
+
+ if (tempSrc)
+ _mesa_free(tempSrc);
+ if (texDest)
+ st_texture_image_unmap(ctx->st, stImage);
}
screen->tex_surface_release(screen, &dest_surf);
@@ -1010,8 +1045,9 @@ st_copy_texsubimage(GLcontext *ctx,
struct st_renderbuffer *strb;
struct pipe_context *pipe = ctx->st->pipe;
struct pipe_screen *screen = pipe->screen;
- uint dest_format, src_format;
+ enum pipe_format dest_format, src_format;
GLboolean use_fallback = GL_TRUE;
+ GLboolean matching_base_formats;
st_flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL);
@@ -1034,21 +1070,28 @@ st_copy_texsubimage(GLcontext *ctx,
src_format = strb->surface->format;
dest_format = stImage->pt->format;
- if (ctx->_ImageTransferState == 0x0) {
- /* do blit-style copy */
- struct pipe_surface *dest_surface;
-
- dest_surface = screen->get_tex_surface(screen, stImage->pt,
- stImage->face,
- stImage->level, destZ,
- PIPE_BUFFER_USAGE_GPU_WRITE);
+ /*
+ * Determine if the src framebuffer and dest texture have the same
+ * base format. We need this to detect a case such as the framebuffer
+ * being GL_RGBA but the texture being GL_RGB. If the actual hardware
+ * texture format stores RGBA we need to set A=1 (overriding the
+ * framebuffer's alpha values). We can't do that with the blit or
+ * textured-quad paths.
+ */
+ matching_base_formats = (strb->Base._BaseFormat == texImage->_BaseFormat);
- assert(strb->surface->buffer);
- assert(dest_surface->buffer);
+ if (matching_base_formats && ctx->_ImageTransferState == 0x0) {
+ /* try potential hardware path */
+ struct pipe_surface *dest_surface = NULL;
if (src_format == dest_format) {
/* use surface_copy() / blit */
boolean do_flip = (st_fb_orientation(ctx->ReadBuffer) == Y_0_TOP);
+
+ dest_surface = screen->get_tex_surface(screen, stImage->pt,
+ stImage->face, stImage->level,
+ destZ,
+ PIPE_BUFFER_USAGE_GPU_WRITE);
pipe->surface_copy(pipe,
do_flip,
/* dest */
@@ -1072,6 +1115,12 @@ st_copy_texsubimage(GLcontext *ctx,
/* draw textured quad to do the copy */
boolean do_flip = (st_fb_orientation(ctx->ReadBuffer) == Y_0_TOP);
int srcY0, srcY1;
+
+ dest_surface = screen->get_tex_surface(screen, stImage->pt,
+ stImage->face, stImage->level,
+ destZ,
+ PIPE_BUFFER_USAGE_GPU_WRITE);
+
if (do_flip) {
srcY1 = strb->Base.Height - srcY - height;
srcY0 = srcY1 + height;
@@ -1091,7 +1140,8 @@ st_copy_texsubimage(GLcontext *ctx,
use_fallback = GL_FALSE;
}
- pipe_surface_reference(&dest_surface, NULL);
+ if (dest_surface)
+ pipe_surface_reference(&dest_surface, NULL);
}
if (use_fallback) {
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-14 02:27:58 +0000