#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"
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;
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:
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) {
}
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);
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);
+ }
}
}
+/**
+ * Bilinear interpolation of two source rows. floating point pixels.
+ */
+static void
+resample_linear_row_float(GLint srcWidth, GLint dstWidth,
+ const GLvoid *srcBuffer0, const GLvoid *srcBuffer1,
+ GLvoid *dstBuffer, GLboolean flip, GLfloat rowWeight)
+{
+ const GLfloat (*srcColor0)[4] = (const GLfloat (*)[4]) srcBuffer0;
+ const GLfloat (*srcColor1)[4] = (const GLfloat (*)[4]) srcBuffer1;
+ GLfloat (*dstColor)[4] = (GLfloat (*)[4]) dstBuffer;
+ const GLfloat dstWidthF = (GLfloat) dstWidth;
+ GLint dstCol;
+
+ for (dstCol = 0; dstCol < dstWidth; dstCol++) {
+ const GLfloat srcCol = (dstCol * srcWidth) / dstWidthF;
+ GLint srcCol0 = IFLOOR(srcCol);
+ GLint srcCol1 = srcCol0 + 1;
+ GLfloat colWeight = srcCol - srcCol0; /* fractional part of srcCol */
+ GLfloat red, green, blue, alpha;
+
+ ASSERT(srcCol0 >= 0);
+ ASSERT(srcCol0 < srcWidth);
+ ASSERT(srcCol1 <= srcWidth);
+
+ if (srcCol1 == srcWidth) {
+ /* last column fudge */
+ srcCol1--;
+ colWeight = 0.0;
+ }
+
+ if (flip) {
+ srcCol0 = srcWidth - 1 - srcCol0;
+ srcCol1 = srcWidth - 1 - srcCol1;
+ }
+
+ red = lerp_2d(colWeight, rowWeight,
+ srcColor0[srcCol0][RCOMP], srcColor0[srcCol1][RCOMP],
+ srcColor1[srcCol0][RCOMP], srcColor1[srcCol1][RCOMP]);
+ green = lerp_2d(colWeight, rowWeight,
+ srcColor0[srcCol0][GCOMP], srcColor0[srcCol1][GCOMP],
+ srcColor1[srcCol0][GCOMP], srcColor1[srcCol1][GCOMP]);
+ blue = lerp_2d(colWeight, rowWeight,
+ srcColor0[srcCol0][BCOMP], srcColor0[srcCol1][BCOMP],
+ srcColor1[srcCol0][BCOMP], srcColor1[srcCol1][BCOMP]);
+ alpha = lerp_2d(colWeight, rowWeight,
+ srcColor0[srcCol0][ACOMP], srcColor0[srcCol1][ACOMP],
+ srcColor1[srcCol0][ACOMP], srcColor1[srcCol1][ACOMP]);
+
+ dstColor[dstCol][RCOMP] = red;
+ dstColor[dstCol][GCOMP] = green;
+ dstColor[dstCol][BCOMP] = blue;
+ dstColor[dstCol][ACOMP] = alpha;
+ }
+}
+
+
/**
- * Bilinear filtered blit (color only).
+ * Bilinear filtered blit (color only, non-integer values).
*/
static void
blit_linear(struct gl_context *ctx,
GLint srcBufferY0 = -1, srcBufferY1 = -1;
GLvoid *dstBuffer;
- switch (readRb->DataType) {
- case GL_UNSIGNED_BYTE:
+ gl_format readFormat = _mesa_get_srgb_format_linear(readRb->Format);
+ gl_format drawFormat = _mesa_get_srgb_format_linear(drawRb->Format);
+ GLuint bpp = _mesa_get_format_bytes(readFormat);
+
+ GLenum pixelType;
+
+ GLubyte *srcMap, *dstMap;
+ GLint srcRowStride, dstRowStride;
+
+
+ /* Determine datatype for resampling */
+ if (_mesa_get_format_max_bits(readFormat) == 8 &&
+ _mesa_get_format_datatype(readFormat) == GL_UNSIGNED_NORMALIZED) {
+ pixelType = GL_UNSIGNED_BYTE;
pixelSize = 4 * sizeof(GLubyte);
- break;
- case GL_UNSIGNED_SHORT:
- pixelSize = 4 * sizeof(GLushort);
- break;
- case GL_UNSIGNED_INT:
- pixelSize = 4 * sizeof(GLuint);
- break;
- case GL_FLOAT:
+ }
+ else {
+ pixelType = GL_FLOAT;
pixelSize = 4 * sizeof(GLfloat);
- break;
- default:
- _mesa_problem(ctx, "unexpected buffer type (0x%x) in blit_nearest",
- readRb->DataType);
- return;
}
/* Allocate the src/dst row buffers.
return;
}
+ /*
+ * Map src / dst renderbuffers
+ */
+ if (readRb == drawRb) {
+ /* map whole buffer for read/write */
+ ctx->Driver.MapRenderbuffer(ctx, readRb,
+ 0, 0, readRb->Width, readRb->Height,
+ GL_MAP_READ_BIT | GL_MAP_WRITE_BIT,
+ &srcMap, &srcRowStride);
+ if (!srcMap) {
+ _mesa_error(ctx, GL_OUT_OF_MEMORY, "glBlitFramebuffer");
+ return;
+ }
+
+ dstMap = srcMap;
+ dstRowStride = srcRowStride;
+ }
+ else {
+ /* different src/dst buffers */
+ /* XXX with a bit of work we could just map the regions to be
+ * read/written instead of the whole buffers.
+ */
+ ctx->Driver.MapRenderbuffer(ctx, readRb,
+ 0, 0, readRb->Width, readRb->Height,
+ GL_MAP_READ_BIT, &srcMap, &srcRowStride);
+ if (!srcMap) {
+ _mesa_error(ctx, GL_OUT_OF_MEMORY, "glBlitFramebuffer");
+ return;
+ }
+ ctx->Driver.MapRenderbuffer(ctx, drawRb,
+ 0, 0, drawRb->Width, drawRb->Height,
+ GL_MAP_WRITE_BIT, &dstMap, &dstRowStride);
+ if (!dstMap) {
+ ctx->Driver.UnmapRenderbuffer(ctx, readRb);
+ _mesa_error(ctx, GL_OUT_OF_MEMORY, "glBlitFramebuffer");
+ return;
+ }
+ }
+
for (dstRow = 0; dstRow < dstHeight; dstRow++) {
const GLint dstY = dstYpos + dstRow;
const GLfloat srcRow = (dstRow * srcHeight) / dstHeightF;
srcBuffer0 = srcBuffer1;
srcBuffer1 = tmp;
/* get y1 row */
- readRb->GetRow(ctx, readRb, srcWidth, srcXpos, srcY1, srcBuffer1);
+ {
+ GLubyte *src = srcMap + srcY1 * srcRowStride + srcXpos * bpp;
+ if (pixelType == GL_UNSIGNED_BYTE) {
+ _mesa_unpack_ubyte_rgba_row(readFormat, srcWidth,
+ src, srcBuffer1);
+ }
+ else {
+ _mesa_unpack_rgba_row(readFormat, srcWidth,
+ src, srcBuffer1);
+ }
+ }
srcBufferY0 = srcY0;
srcBufferY1 = srcY1;
}
else {
/* get both new rows */
- readRb->GetRow(ctx, readRb, srcWidth, srcXpos, srcY0, srcBuffer0);
- readRb->GetRow(ctx, readRb, srcWidth, srcXpos, srcY1, srcBuffer1);
+ {
+ GLubyte *src0 = srcMap + srcY0 * srcRowStride + srcXpos * bpp;
+ GLubyte *src1 = srcMap + srcY1 * srcRowStride + srcXpos * bpp;
+ if (pixelType == GL_UNSIGNED_BYTE) {
+ _mesa_unpack_ubyte_rgba_row(readFormat, srcWidth,
+ src0, srcBuffer0);
+ _mesa_unpack_ubyte_rgba_row(readFormat, srcWidth,
+ src1, srcBuffer1);
+ }
+ else {
+ _mesa_unpack_rgba_row(readFormat, srcWidth, src0, srcBuffer0);
+ _mesa_unpack_rgba_row(readFormat, srcWidth, src1, srcBuffer1);
+ }
+ }
srcBufferY0 = srcY0;
srcBufferY1 = srcY1;
}
- if (readRb->DataType == GL_UNSIGNED_BYTE) {
+ if (pixelType == GL_UNSIGNED_BYTE) {
resample_linear_row_ub(srcWidth, dstWidth, srcBuffer0, srcBuffer1,
dstBuffer, invertX, rowWeight);
}
else {
- _mesa_problem(ctx, "Unsupported color channel type in sw blit");
- break;
+ resample_linear_row_float(srcWidth, dstWidth, srcBuffer0, srcBuffer1,
+ dstBuffer, invertX, rowWeight);
}
/* store pixel row in destination */
- drawRb->PutRow(ctx, drawRb, dstWidth, dstXpos, dstY, dstBuffer, NULL);
+ {
+ GLubyte *dst = dstMap + dstY * dstRowStride + dstXpos * bpp;
+ if (pixelType == GL_UNSIGNED_BYTE) {
+ _mesa_pack_ubyte_rgba_row(drawFormat, dstWidth, dstBuffer, dst);
+ }
+ else {
+ _mesa_pack_float_rgba_row(drawFormat, dstWidth, dstBuffer, dst);
+ }
+ }
}
free(srcBuffer0);
free(srcBuffer1);
free(dstBuffer);
+
+ ctx->Driver.UnmapRenderbuffer(ctx, readRb);
+ if (drawRb != readRb) {
+ ctx->Driver.UnmapRenderbuffer(ctx, drawRb);
+ }
}
+
+
/**
* Software fallback for glBlitFramebufferEXT().
*/
return;
}
- swrast_render_start(ctx);
-
if (filter == GL_NEAREST) {
for (i = 0; i < 3; i++) {
if (mask & buffers[i]) {
}
}
- swrast_render_finish(ctx);
}
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