diff options
Diffstat (limited to 'src/mesa/state_tracker/st_cb_readpixels.c')
-rw-r--r-- | src/mesa/state_tracker/st_cb_readpixels.c | 104 |
1 files changed, 59 insertions, 45 deletions
diff --git a/src/mesa/state_tracker/st_cb_readpixels.c b/src/mesa/state_tracker/st_cb_readpixels.c index 646eaff190..2a4beccd90 100644 --- a/src/mesa/state_tracker/st_cb_readpixels.c +++ b/src/mesa/state_tracker/st_cb_readpixels.c @@ -63,44 +63,48 @@ st_read_stencil_pixels(GLcontext *ctx, GLint x, GLint y, struct gl_framebuffer *fb = ctx->ReadBuffer; struct pipe_screen *screen = ctx->st->pipe->screen; struct st_renderbuffer *strb = st_renderbuffer(fb->_StencilBuffer); - struct pipe_surface *ps; + struct pipe_transfer *pt; ubyte *stmap; GLint j; - /* Create a CPU-READ surface/view into the renderbuffer's texture */ - ps = screen->get_tex_surface(screen, strb->texture, 0, 0, 0, - PIPE_BUFFER_USAGE_CPU_READ); + if (st_fb_orientation(ctx->DrawBuffer) == Y_0_TOP) { + y = ctx->DrawBuffer->Height - y - 1; + } + + /* Create a read transfer from the renderbuffer's texture */ + pt = screen->get_tex_transfer(screen, strb->texture, 0, 0, 0, + PIPE_TRANSFER_READ, x, y, width, height); /* map the stencil buffer */ - stmap = screen->surface_map(screen, ps, PIPE_BUFFER_USAGE_CPU_READ); + stmap = screen->transfer_map(screen, pt); /* width should never be > MAX_WIDTH since we did clipping earlier */ ASSERT(width <= MAX_WIDTH); /* process image row by row */ - for (j = 0; j < height; j++, y++) { + for (j = 0; j < height; j++) { GLvoid *dest; GLstencil values[MAX_WIDTH]; GLint srcY; if (st_fb_orientation(ctx->DrawBuffer) == Y_0_TOP) { - srcY = ctx->DrawBuffer->Height - y - 1; + srcY = height - j - 1; } else { - srcY = y; + srcY = j; } /* get stencil values */ - switch (ps->format) { + switch (pt->format) { case PIPE_FORMAT_S8_UNORM: { - const ubyte *src = stmap + srcY * ps->stride + x; + const ubyte *src = stmap + srcY * pt->stride; memcpy(values, src, width); } break; case PIPE_FORMAT_S8Z24_UNORM: { - const uint *src = (uint *) (stmap + srcY * ps->stride + x*4); + const uint *src = (uint *) (stmap + srcY * pt->stride); GLint k; for (k = 0; k < width; k++) { values[k] = src[k] >> 24; @@ -109,7 +113,7 @@ st_read_stencil_pixels(GLcontext *ctx, GLint x, GLint y, break; case PIPE_FORMAT_Z24S8_UNORM: { - const uint *src = (uint *) (stmap + srcY * ps->stride + x*4); + const uint *src = (uint *) (stmap + srcY * pt->stride); GLint k; for (k = 0; k < width; k++) { values[k] = src[k] & 0xff; @@ -129,8 +133,8 @@ st_read_stencil_pixels(GLcontext *ctx, GLint x, GLint y, /* unmap the stencil buffer */ - screen->surface_unmap(screen, ps); - pipe_surface_reference(&ps, NULL); + screen->transfer_unmap(screen, pt); + screen->tex_transfer_destroy(pt); } @@ -203,28 +207,33 @@ st_fast_readpixels(GLcontext *ctx, struct st_renderbuffer *strb, { struct pipe_context *pipe = ctx->st->pipe; struct pipe_screen *screen = pipe->screen; - struct pipe_surface *surf; + struct pipe_transfer *trans; const GLubyte *map; GLubyte *dst; GLint row, col, dy, dstStride; - surf = screen->get_tex_surface(screen, strb->texture, 0, 0, 0, - PIPE_BUFFER_USAGE_CPU_READ); - if (!surf) { + if (st_fb_orientation(ctx->ReadBuffer) == Y_0_TOP) { + y = strb->texture->height[0] - y - height; + } + + trans = screen->get_tex_transfer(screen, strb->texture, 0, 0, 0, + PIPE_TRANSFER_READ, x, y, width, height); + if (!trans) { return GL_FALSE; } - map = screen->surface_map(screen, surf, PIPE_BUFFER_USAGE_CPU_READ); + map = screen->transfer_map(screen, trans); if (!map) { - pipe_surface_reference(&surf, NULL); + screen->tex_transfer_destroy(trans); return GL_FALSE; } if (st_fb_orientation(ctx->ReadBuffer) == Y_0_TOP) { - y = surf->height - y - 1; + y = height - 1; dy = -1; } else { + y = 0; dy = 1; } @@ -235,7 +244,7 @@ st_fast_readpixels(GLcontext *ctx, struct st_renderbuffer *strb, switch (combo) { case A8R8G8B8_UNORM_TO_RGBA_UBYTE: for (row = 0; row < height; row++) { - const GLubyte *src = map + y * surf->stride + x * 4; + const GLubyte *src = map + y * trans->stride; for (col = 0; col < width; col++) { GLuint pixel = ((GLuint *) src)[col]; dst[col*4+0] = (pixel >> 16) & 0xff; @@ -249,7 +258,7 @@ st_fast_readpixels(GLcontext *ctx, struct st_renderbuffer *strb, break; case A8R8G8B8_UNORM_TO_RGB_UBYTE: for (row = 0; row < height; row++) { - const GLubyte *src = map + y * surf->stride + x * 4; + const GLubyte *src = map + y * trans->stride; for (col = 0; col < width; col++) { GLuint pixel = ((GLuint *) src)[col]; dst[col*3+0] = (pixel >> 16) & 0xff; @@ -262,7 +271,7 @@ st_fast_readpixels(GLcontext *ctx, struct st_renderbuffer *strb, break; case A8R8G8B8_UNORM_TO_BGRA_UINT: for (row = 0; row < height; row++) { - const GLubyte *src = map + y * surf->stride + x * 4; + const GLubyte *src = map + y * trans->stride; memcpy(dst, src, 4 * width); dst += dstStride; y += dy; @@ -272,8 +281,8 @@ st_fast_readpixels(GLcontext *ctx, struct st_renderbuffer *strb, ; /* nothing */ } - screen->surface_unmap(screen, surf); - pipe_surface_reference(&surf, NULL); + screen->transfer_unmap(screen, trans); + screen->tex_transfer_destroy(trans); } return GL_TRUE; @@ -281,7 +290,7 @@ st_fast_readpixels(GLcontext *ctx, struct st_renderbuffer *strb, /** - * Do glReadPixels by getting rows from the framebuffer surface with + * Do glReadPixels by getting rows from the framebuffer transfer with * get_tile(). Convert to requested format/type with Mesa image routines. * Image transfer ops are done in software too. */ @@ -300,7 +309,7 @@ st_readpixels(GLcontext *ctx, GLint x, GLint y, GLsizei width, GLsizei height, GLfloat *df; struct st_renderbuffer *strb; struct gl_pixelstore_attrib clippedPacking = *pack; - struct pipe_surface *surf; + struct pipe_transfer *trans; assert(ctx->ReadBuffer->Width > 0); @@ -309,7 +318,7 @@ st_readpixels(GLcontext *ctx, GLint x, GLint y, GLsizei width, GLsizei height, /* Do all needed clipping here, so that we can forget about it later */ if (!_mesa_clip_readpixels(ctx, &x, &y, &width, &height, &clippedPacking)) { - /* The ReadPixels surface is totally outside the window bounds */ + /* The ReadPixels transfer is totally outside the window bounds */ return; } @@ -355,21 +364,26 @@ st_readpixels(GLcontext *ctx, GLint x, GLint y, GLsizei width, GLsizei height, dfStride = 0; } + if (st_fb_orientation(ctx->ReadBuffer) == Y_0_TOP) { + y = strb->Base.Height - y - height; + } + + /* Create a read transfer from the renderbuffer's texture */ + trans = screen->get_tex_transfer(screen, strb->texture, 0, 0, 0, + PIPE_TRANSFER_READ, x, y, width, height); + /* determine bottom-to-top vs. top-to-bottom order */ if (st_fb_orientation(ctx->ReadBuffer) == Y_0_TOP) { - y = strb->Base.Height - 1 - y; + y = height - 1; yStep = -1; } else { + y = 0; yStep = 1; } - /* Create a CPU-READ surface/view into the renderbuffer's texture */ - surf = screen->get_tex_surface(screen, strb->texture, 0, 0, 0, - PIPE_BUFFER_USAGE_CPU_READ); - /* - * Copy pixels from pipe_surface to user memory + * Copy pixels from pipe_transfer to user memory */ { /* dest of first pixel in client memory */ @@ -379,14 +393,14 @@ st_readpixels(GLcontext *ctx, GLint x, GLint y, GLsizei width, GLsizei height, const GLint dstStride = _mesa_image_row_stride(&clippedPacking, width, format, type); - if (surf->format == PIPE_FORMAT_S8Z24_UNORM || - surf->format == PIPE_FORMAT_X8Z24_UNORM) { + if (trans->format == PIPE_FORMAT_S8Z24_UNORM || + trans->format == PIPE_FORMAT_X8Z24_UNORM) { if (format == GL_DEPTH_COMPONENT) { for (i = 0; i < height; i++) { GLuint ztemp[MAX_WIDTH]; GLfloat zfloat[MAX_WIDTH]; const double scale = 1.0 / ((1 << 24) - 1); - pipe_get_tile_raw(surf, x, y, width, 1, ztemp, 0); + pipe_get_tile_raw(trans, 0, y, width, 1, ztemp, 0); y += yStep; for (j = 0; j < width; j++) { zfloat[j] = (float) (scale * (ztemp[j] & 0xffffff)); @@ -400,18 +414,18 @@ st_readpixels(GLcontext *ctx, GLint x, GLint y, GLsizei width, GLsizei height, /* untested, but simple: */ assert(format == GL_DEPTH_STENCIL_EXT); for (i = 0; i < height; i++) { - pipe_get_tile_raw(surf, x, y, width, 1, dst, 0); + pipe_get_tile_raw(trans, 0, y, width, 1, dst, 0); y += yStep; dst += dstStride; } } } - else if (surf->format == PIPE_FORMAT_Z16_UNORM) { + else if (trans->format == PIPE_FORMAT_Z16_UNORM) { for (i = 0; i < height; i++) { GLushort ztemp[MAX_WIDTH]; GLfloat zfloat[MAX_WIDTH]; const double scale = 1.0 / 0xffff; - pipe_get_tile_raw(surf, x, y, width, 1, ztemp, 0); + pipe_get_tile_raw(trans, 0, y, width, 1, ztemp, 0); y += yStep; for (j = 0; j < width; j++) { zfloat[j] = (float) (scale * ztemp[j]); @@ -421,12 +435,12 @@ st_readpixels(GLcontext *ctx, GLint x, GLint y, GLsizei width, GLsizei height, dst += dstStride; } } - else if (surf->format == PIPE_FORMAT_Z32_UNORM) { + else if (trans->format == PIPE_FORMAT_Z32_UNORM) { for (i = 0; i < height; i++) { GLuint ztemp[MAX_WIDTH]; GLfloat zfloat[MAX_WIDTH]; const double scale = 1.0 / 0xffffffff; - pipe_get_tile_raw(surf, x, y, width, 1, ztemp, 0); + pipe_get_tile_raw(trans, 0, y, width, 1, ztemp, 0); y += yStep; for (j = 0; j < width; j++) { zfloat[j] = (float) (scale * ztemp[j]); @@ -440,7 +454,7 @@ st_readpixels(GLcontext *ctx, GLint x, GLint y, GLsizei width, GLsizei height, /* RGBA format */ /* Do a row at a time to flip image data vertically */ for (i = 0; i < height; i++) { - pipe_get_tile_rgba(surf, x, y, width, 1, df); + pipe_get_tile_rgba(trans, 0, y, width, 1, df); y += yStep; df += dfStride; if (!dfStride) { @@ -452,7 +466,7 @@ st_readpixels(GLcontext *ctx, GLint x, GLint y, GLsizei width, GLsizei height, } } - pipe_surface_reference(&surf, NULL); + screen->tex_transfer_destroy(trans); _mesa_unmap_readpix_pbo(ctx, &clippedPacking); } |