diff options
| -rw-r--r-- | src/mesa/swrast/s_blit.c | 189 |
1 files changed, 150 insertions, 39 deletions
diff --git a/src/mesa/swrast/s_blit.c b/src/mesa/swrast/s_blit.c index 6ad4f3fbc92..1063024fb4b 100644 --- a/src/mesa/swrast/s_blit.c +++ b/src/mesa/swrast/s_blit.c @@ -27,6 +27,8 @@ #include "main/condrender.h" #include "main/image.h" #include "main/macros.h" +#include "main/format_unpack.h" +#include "main/format_pack.h" #include "s_context.h" @@ -122,10 +124,18 @@ blit_nearest(struct gl_context *ctx, const GLboolean invertX = (srcX1 < srcX0) ^ (dstX1 < dstX0); const GLboolean invertY = (srcY1 < srcY0) ^ (dstY1 < dstY0); - + enum mode { + DIRECT, + UNPACK_RGBA_FLOAT, + UNPACK_Z_FLOAT, + UNPACK_Z_INT, + UNPACK_S, + } mode; + GLubyte *srcMap, *dstMap; + GLint srcRowStride, dstRowStride; GLint dstRow; - GLint comps, pixelSize; + GLint pixelSize; GLvoid *srcBuffer, *dstBuffer; GLint prevY = -1; @@ -138,42 +148,43 @@ blit_nearest(struct gl_context *ctx, case GL_COLOR_BUFFER_BIT: readRb = ctx->ReadBuffer->_ColorReadBuffer; drawRb = ctx->DrawBuffer->_ColorDrawBuffers[0]; - comps = 4; + + if (readRb->Format == drawRb->Format) { + mode = DIRECT; + pixelSize = _mesa_get_format_bytes(readRb->Format); + } else { + mode = UNPACK_RGBA_FLOAT; + pixelSize = 16; + } + break; case GL_DEPTH_BUFFER_BIT: - readRb = ctx->ReadBuffer->_DepthBuffer; - drawRb = ctx->DrawBuffer->_DepthBuffer; - comps = 1; + readRb = ctx->ReadBuffer->Attachment[BUFFER_DEPTH].Renderbuffer; + drawRb = ctx->DrawBuffer->Attachment[BUFFER_DEPTH].Renderbuffer; + + /* Note that for depth/stencil, the formats of src/dst must match. By + * using the core helpers for pack/unpack, we avoid needing to handle + * masking for things like DEPTH copies of Z24S8. + */ + if (readRb->Format == MESA_FORMAT_Z32_FLOAT || + readRb->Format == MESA_FORMAT_Z32_FLOAT_X24S8) { + mode = UNPACK_Z_FLOAT; + } else { + mode = UNPACK_Z_INT; + } + pixelSize = 4; break; case GL_STENCIL_BUFFER_BIT: - readRb = ctx->ReadBuffer->_StencilBuffer; - drawRb = ctx->DrawBuffer->_StencilBuffer; - comps = 1; + readRb = ctx->ReadBuffer->Attachment[BUFFER_STENCIL].Renderbuffer; + drawRb = ctx->DrawBuffer->Attachment[BUFFER_STENCIL].Renderbuffer; + mode = UNPACK_S; + pixelSize = 1; break; default: _mesa_problem(ctx, "unexpected buffer in blit_nearest()"); return; } - switch (readRb->DataType) { - case GL_UNSIGNED_BYTE: - pixelSize = comps * sizeof(GLubyte); - break; - case GL_UNSIGNED_SHORT: - pixelSize = comps * sizeof(GLushort); - break; - case GL_UNSIGNED_INT: - pixelSize = comps * sizeof(GLuint); - break; - case GL_FLOAT: - pixelSize = comps * sizeof(GLfloat); - break; - default: - _mesa_problem(ctx, "unexpected buffer type (0x%x) in blit_nearest", - readRb->DataType); - return; - } - /* choose row resampler */ switch (pixelSize) { case 1: @@ -197,6 +208,62 @@ blit_nearest(struct gl_context *ctx, return; } + if (readRb == drawRb) { + /* map whole buffer for read/write */ + /* XXX we could be clever and just map the union region of the + * source and dest rects. + */ + GLubyte *map; + GLint rowStride; + GLint formatSize = _mesa_get_format_bytes(readRb->Format); + + ctx->Driver.MapRenderbuffer(ctx, readRb, 0, 0, + readRb->Width, readRb->Height, + GL_MAP_READ_BIT | GL_MAP_WRITE_BIT, + &map, &rowStride); + if (!map) { + _mesa_error(ctx, GL_OUT_OF_MEMORY, "glBlitFramebuffer"); + return; + } + + srcMap = map + srcYpos * rowStride + srcXpos * formatSize; + dstMap = map + dstYpos * rowStride + dstXpos * formatSize; + + /* this handles overlapping copies */ + if (srcY0 < dstY0) { + /* copy in reverse (top->down) order */ + srcMap += rowStride * (readRb->Height - 1); + dstMap += rowStride * (readRb->Height - 1); + srcRowStride = -rowStride; + dstRowStride = -rowStride; + } + else { + /* copy in normal (bottom->up) order */ + srcRowStride = rowStride; + dstRowStride = rowStride; + } + } + else { + /* different src/dst buffers */ + ctx->Driver.MapRenderbuffer(ctx, readRb, + srcXpos, srcYpos, + srcWidth, srcHeight, + GL_MAP_READ_BIT, &srcMap, &srcRowStride); + if (!srcMap) { + _mesa_error(ctx, GL_OUT_OF_MEMORY, "glBlitFramebuffer"); + return; + } + ctx->Driver.MapRenderbuffer(ctx, drawRb, + dstXpos, dstYpos, + dstWidth, dstHeight, + GL_MAP_WRITE_BIT, &dstMap, &dstRowStride); + if (!dstMap) { + ctx->Driver.UnmapRenderbuffer(ctx, readRb); + _mesa_error(ctx, GL_OUT_OF_MEMORY, "glBlitFramebuffer"); + return; + } + } + /* allocate the src/dst row buffers */ srcBuffer = malloc(pixelSize * srcWidth); if (!srcBuffer) { @@ -211,9 +278,8 @@ blit_nearest(struct gl_context *ctx, } for (dstRow = 0; dstRow < dstHeight; dstRow++) { - const GLint dstY = dstYpos + dstRow; GLint srcRow = (dstRow * srcHeight) / dstHeight; - GLint srcY; + GLubyte *dstRowStart = dstMap + dstRowStride * dstRow; ASSERT(srcRow >= 0); ASSERT(srcRow < srcHeight); @@ -222,21 +288,67 @@ blit_nearest(struct gl_context *ctx, srcRow = srcHeight - 1 - srcRow; } - srcY = srcYpos + srcRow; - /* get pixel row from source and resample to match dest width */ - if (prevY != srcY) { - readRb->GetRow(ctx, readRb, srcWidth, srcXpos, srcY, srcBuffer); + if (prevY != srcRow) { + GLubyte *srcRowStart = srcMap + srcRowStride * srcRow; + + switch (mode) { + case DIRECT: + memcpy(srcBuffer, srcRowStart, pixelSize * srcWidth); + break; + case UNPACK_RGBA_FLOAT: + _mesa_unpack_rgba_row(readRb->Format, srcWidth, srcRowStart, + srcBuffer); + break; + case UNPACK_Z_FLOAT: + _mesa_unpack_float_z_row(readRb->Format, srcWidth, srcRowStart, + srcBuffer); + break; + case UNPACK_Z_INT: + _mesa_unpack_uint_z_row(readRb->Format, srcWidth, srcRowStart, + srcBuffer); + break; + case UNPACK_S: + _mesa_unpack_ubyte_stencil_row(readRb->Format, srcWidth, + srcRowStart, srcBuffer); + break; + } + (*resampleRow)(srcWidth, dstWidth, srcBuffer, dstBuffer, invertX); - prevY = srcY; + prevY = srcRow; } /* store pixel row in destination */ - drawRb->PutRow(ctx, drawRb, dstWidth, dstXpos, dstY, dstBuffer, NULL); + switch (mode) { + case DIRECT: + memcpy(dstRowStart, dstBuffer, pixelSize * srcWidth); + break; + case UNPACK_RGBA_FLOAT: + _mesa_pack_float_rgba_row(drawRb->Format, dstWidth, dstBuffer, + dstRowStart); + break; + case UNPACK_Z_FLOAT: + _mesa_pack_float_z_row(drawRb->Format, dstWidth, dstBuffer, + dstRowStart); + break; + case UNPACK_Z_INT: + _mesa_pack_uint_z_row(drawRb->Format, dstWidth, dstBuffer, + dstRowStart); + break; + case UNPACK_S: + _mesa_pack_ubyte_stencil_row(drawRb->Format, dstWidth, dstBuffer, + dstRowStart); + break; + } } free(srcBuffer); free(dstBuffer); + + ctx->Driver.UnmapRenderbuffer(ctx, readRb); + if (drawRb != readRb) { + ctx->Driver.UnmapRenderbuffer(ctx, drawRb); + } } @@ -503,8 +615,6 @@ _swrast_BlitFramebuffer(struct gl_context *ctx, return; } - swrast_render_start(ctx); - if (filter == GL_NEAREST) { for (i = 0; i < 3; i++) { if (mask & buffers[i]) { @@ -516,10 +626,11 @@ _swrast_BlitFramebuffer(struct gl_context *ctx, else { ASSERT(filter == GL_LINEAR); if (mask & GL_COLOR_BUFFER_BIT) { /* depth/stencil not allowed */ + swrast_render_start(ctx); blit_linear(ctx, srcX0, srcY0, srcX1, srcY1, dstX0, dstY0, dstX1, dstY1); + swrast_render_finish(ctx); } } - swrast_render_finish(ctx); } |