*/
#include <stdbool.h>
+#include <stdio.h>
#include "context.h"
#include "enums.h"
#include "blit.h"
#include "fbobject.h"
+#include "framebuffer.h"
#include "glformats.h"
#include "mtypes.h"
+#include "macros.h"
#include "state.h"
const struct gl_renderbuffer *rb)
{
GLuint i;
- for (i = 0; i < Elements(fb->Attachment); i++) {
+ for (i = 0; i < ARRAY_SIZE(fb->Attachment); i++) {
if (fb->Attachment[i].Renderbuffer == rb)
return &fb->Attachment[i];
}
}
+/**
+ * \return true if two regions overlap, false otherwise
+ */
+bool
+_mesa_regions_overlap(int srcX0, int srcY0,
+ int srcX1, int srcY1,
+ int dstX0, int dstY0,
+ int dstX1, int dstY1)
+{
+ if (MAX2(srcX0, srcX1) <= MIN2(dstX0, dstX1))
+ return false; /* dst completely right of src */
+
+ if (MAX2(dstX0, dstX1) <= MIN2(srcX0, srcX1))
+ return false; /* dst completely left of src */
+
+ if (MAX2(srcY0, srcY1) <= MIN2(dstY0, dstY1))
+ return false; /* dst completely above src */
+
+ if (MAX2(dstY0, dstY1) <= MIN2(srcY0, srcY1))
+ return false; /* dst completely below src */
+
+ return true; /* some overlap */
+}
+
+
/**
* Helper function for checking if the datatypes of color buffers are
* compatible for glBlitFramebuffer. From the 3.1 spec, page 198:
{
GLenum readFormat, drawFormat;
- /* The simple case where we know the backing Mesa formats are the same.
- */
- if (_mesa_get_srgb_format_linear(readRb->Format) ==
- _mesa_get_srgb_format_linear(drawRb->Format)) {
- return GL_TRUE;
- }
-
- /* The Mesa formats are different, so we must check whether the internal
- * formats are compatible.
+ /* This checks whether the internal formats are compatible rather than the
+ * Mesa format for two reasons:
*
- * Under some circumstances, the user may request e.g. two GL_RGBA8
- * textures and get two entirely different Mesa formats like RGBA8888 and
- * ARGB8888. Drivers behaving like that should be able to cope with
- * non-matching formats by themselves, because it's not the user's fault.
+ * • Under some circumstances, the user may request e.g. two GL_RGBA8
+ * textures and get two entirely different Mesa formats like RGBA8888 and
+ * ARGB8888. Drivers behaving like that should be able to cope with
+ * non-matching formats by themselves, because it's not the user's fault.
+ *
+ * • Picking two different internal formats can end up with the same Mesa
+ * format. For example the driver might be simulating GL_RGB textures
+ * with GL_RGBA internally and in that case both internal formats would
+ * end up with RGBA8888.
+ *
+ * This function is used to generate a GL error according to the spec so in
+ * both cases we want to be looking at the application-level format, which
+ * is InternalFormat.
*
* Blits between linear and sRGB formats are also allowed.
*/
}
-/**
- * Blit rectangular region, optionally from one framebuffer to another.
- *
- * Note, if the src buffer is multisampled and the dest is not, this is
- * when the samples must be resolved to a single color.
- */
-void GLAPIENTRY
-_mesa_BlitFramebuffer(GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1,
- GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1,
- GLbitfield mask, GLenum filter)
+void
+_mesa_blit_framebuffer(struct gl_context *ctx,
+ struct gl_framebuffer *readFb,
+ struct gl_framebuffer *drawFb,
+ GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1,
+ GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1,
+ GLbitfield mask, GLenum filter, const char *func)
{
const GLbitfield legalMaskBits = (GL_COLOR_BUFFER_BIT |
GL_DEPTH_BUFFER_BIT |
GL_STENCIL_BUFFER_BIT);
- const struct gl_framebuffer *readFb, *drawFb;
- GET_CURRENT_CONTEXT(ctx);
FLUSH_VERTICES(ctx, 0);
- if (MESA_VERBOSE & VERBOSE_API)
- _mesa_debug(ctx,
- "glBlitFramebuffer(%d, %d, %d, %d, %d, %d, %d, %d, 0x%x, %s)\n",
- srcX0, srcY0, srcX1, srcY1,
- dstX0, dstY0, dstX1, dstY1,
- mask, _mesa_lookup_enum_by_nr(filter));
-
- if (ctx->NewState) {
- _mesa_update_state(ctx);
- }
+ /* Update completeness status of readFb and drawFb. */
+ _mesa_update_framebuffer(ctx, readFb, drawFb);
- readFb = ctx->ReadBuffer;
- drawFb = ctx->DrawBuffer;
+ /* Make sure drawFb has an initialized bounding box. */
+ _mesa_update_draw_buffer_bounds(ctx, drawFb);
if (!readFb || !drawFb) {
/* This will normally never happen but someday we may want to
if (drawFb->_Status != GL_FRAMEBUFFER_COMPLETE_EXT ||
readFb->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {
_mesa_error(ctx, GL_INVALID_FRAMEBUFFER_OPERATION_EXT,
- "glBlitFramebufferEXT(incomplete draw/read buffers)");
+ "%s(incomplete draw/read buffers)", func);
return;
}
if (!is_valid_blit_filter(ctx, filter)) {
- _mesa_error(ctx, GL_INVALID_ENUM, "glBlitFramebufferEXT(%s)",
- _mesa_lookup_enum_by_nr(filter));
+ _mesa_error(ctx, GL_INVALID_ENUM, "%s(invalid filter %s)", func,
+ _mesa_enum_to_string(filter));
return;
}
if ((filter == GL_SCALED_RESOLVE_FASTEST_EXT ||
filter == GL_SCALED_RESOLVE_NICEST_EXT) &&
(readFb->Visual.samples == 0 || drawFb->Visual.samples > 0)) {
- _mesa_error(ctx, GL_INVALID_OPERATION, "glBlitFramebufferEXT(%s)",
- _mesa_lookup_enum_by_nr(filter));
+ _mesa_error(ctx, GL_INVALID_OPERATION, "%s(%s: invalid samples)", func,
+ _mesa_enum_to_string(filter));
return;
}
if (mask & ~legalMaskBits) {
- _mesa_error( ctx, GL_INVALID_VALUE, "glBlitFramebufferEXT(mask)");
+ _mesa_error(ctx, GL_INVALID_VALUE, "%s(invalid mask bits set)", func);
return;
}
if ((mask & (GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT))
&& filter != GL_NEAREST) {
_mesa_error(ctx, GL_INVALID_OPERATION,
- "glBlitFramebufferEXT(depth/stencil requires GL_NEAREST filter)");
+ "%s(depth/stencil requires GL_NEAREST filter)", func);
return;
}
/* get color read/draw renderbuffers */
if (mask & GL_COLOR_BUFFER_BIT) {
- const GLuint numColorDrawBuffers = ctx->DrawBuffer->_NumColorDrawBuffers;
+ const GLuint numColorDrawBuffers = drawFb->_NumColorDrawBuffers;
const struct gl_renderbuffer *colorReadRb = readFb->_ColorReadBuffer;
const struct gl_renderbuffer *colorDrawRb = NULL;
GLuint i;
}
else {
for (i = 0; i < numColorDrawBuffers; i++) {
- colorDrawRb = ctx->DrawBuffer->_ColorDrawBuffers[i];
+ colorDrawRb = drawFb->_ColorDrawBuffers[i];
if (!colorDrawRb)
continue;
*/
if (_mesa_is_gles3(ctx) && (colorDrawRb == colorReadRb)) {
_mesa_error(ctx, GL_INVALID_OPERATION,
- "glBlitFramebuffer(source and destination color "
- "buffer cannot be the same)");
+ "%s(source and destination color "
+ "buffer cannot be the same)", func);
return;
}
if (!compatible_color_datatypes(colorReadRb->Format,
colorDrawRb->Format)) {
_mesa_error(ctx, GL_INVALID_OPERATION,
- "glBlitFramebufferEXT(color buffer datatypes mismatch)");
+ "%s(color buffer datatypes mismatch)", func);
return;
}
/* extra checks for multisample copies... */
if (readFb->Visual.samples > 0 || drawFb->Visual.samples > 0) {
- /* color formats must match */
- if (!compatible_resolve_formats(colorReadRb, colorDrawRb)) {
+ /* color formats must match on GLES. This isn't checked on
+ * desktop GL because the GL 4.4 spec was changed to allow it.
+ * In the section entitled “Changes in the released
+ * Specification of July 22, 2013” it says:
+ *
+ * “Relax BlitFramebuffer in section 18.3.1 so that format
+ * conversion can take place during multisample blits, since
+ * drivers already allow this and some apps depend on it.”
+ */
+ if (_mesa_is_gles(ctx) &&
+ !compatible_resolve_formats(colorReadRb, colorDrawRb)) {
_mesa_error(ctx, GL_INVALID_OPERATION,
- "glBlitFramebufferEXT(bad src/dst multisample pixel formats)");
+ "%s(bad src/dst multisample pixel formats)", func);
return;
}
}
GLenum type = _mesa_get_format_datatype(colorReadRb->Format);
if (type == GL_INT || type == GL_UNSIGNED_INT) {
_mesa_error(ctx, GL_INVALID_OPERATION,
- "glBlitFramebufferEXT(integer color type)");
+ "%s(integer color type)", func);
return;
}
}
* ignored."
*/
if ((readRb == NULL) || (drawRb == NULL)) {
- mask &= ~GL_STENCIL_BUFFER_BIT;
+ mask &= ~GL_STENCIL_BUFFER_BIT;
}
else {
int read_z_bits, draw_z_bits;
if (_mesa_is_gles3(ctx) && (drawRb == readRb)) {
_mesa_error(ctx, GL_INVALID_OPERATION,
- "glBlitFramebuffer(source and destination stencil "
- "buffer cannot be the same)");
+ "%s(source and destination stencil "
+ "buffer cannot be the same)", func);
return;
}
* there is only one: GL_UNSIGNED_INT.
*/
_mesa_error(ctx, GL_INVALID_OPERATION,
- "glBlitFramebuffer(stencil attachment format mismatch)");
+ "%s(stencil attachment format mismatch)", func);
return;
}
_mesa_get_format_datatype(readRb->Format) !=
_mesa_get_format_datatype(drawRb->Format))) {
- _mesa_error(ctx, GL_INVALID_OPERATION, "glBlitFramebuffer"
- "(stencil attachment depth format mismatch)");
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "%s(stencil attachment depth format mismatch)", func);
return;
}
}
* ignored."
*/
if ((readRb == NULL) || (drawRb == NULL)) {
- mask &= ~GL_DEPTH_BUFFER_BIT;
+ mask &= ~GL_DEPTH_BUFFER_BIT;
}
else {
int read_s_bit, draw_s_bit;
if (_mesa_is_gles3(ctx) && (drawRb == readRb)) {
_mesa_error(ctx, GL_INVALID_OPERATION,
- "glBlitFramebuffer(source and destination depth "
- "buffer cannot be the same)");
+ "%s(source and destination depth "
+ "buffer cannot be the same)", func);
return;
}
(_mesa_get_format_datatype(readRb->Format) !=
_mesa_get_format_datatype(drawRb->Format))) {
_mesa_error(ctx, GL_INVALID_OPERATION,
- "glBlitFramebuffer(depth attachment format mismatch)");
+ "%s(depth attachment format mismatch)", func);
return;
}
* we should ignore the stencil format check.
*/
if (read_s_bit > 0 && draw_s_bit > 0 && read_s_bit != draw_s_bit) {
- _mesa_error(ctx, GL_INVALID_OPERATION, "glBlitFramebuffer"
- "(depth attachment stencil bits mismatch)");
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "%s(depth attachment stencil bits mismatch)", func);
return;
}
}
*/
if (drawFb->Visual.samples > 0) {
_mesa_error(ctx, GL_INVALID_OPERATION,
- "glBlitFramebuffer(destination samples must be 0)");
+ "%s(destination samples must be 0)", func);
return;
}
&& (srcX0 != dstX0 || srcY0 != dstY0
|| srcX1 != dstX1 || srcY1 != dstY1)) {
_mesa_error(ctx, GL_INVALID_OPERATION,
- "glBlitFramebuffer(bad src/dst multisample region)");
+ "%s(bad src/dst multisample region)", func);
return;
}
} else {
drawFb->Visual.samples > 0 &&
readFb->Visual.samples != drawFb->Visual.samples) {
_mesa_error(ctx, GL_INVALID_OPERATION,
- "glBlitFramebufferEXT(mismatched samples)");
+ "%s(mismatched samples)", func);
return;
}
if (abs(srcX1 - srcX0) != abs(dstX1 - dstX0) ||
abs(srcY1 - srcY0) != abs(dstY1 - dstY0)) {
_mesa_error(ctx, GL_INVALID_OPERATION,
- "glBlitFramebufferEXT(bad src/dst multisample region sizes)");
+ "%s(bad src/dst multisample region sizes)", func);
return;
}
}
const struct gl_renderbuffer *colorDrawRb = NULL;
GLuint i = 0;
- printf("glBlitFramebuffer(%d, %d, %d, %d, %d, %d, %d, %d,"
- " 0x%x, 0x%x)\n",
- srcX0, srcY0, srcX1, srcY1,
- dstX0, dstY0, dstX1, dstY1,
- mask, filter);
+ printf("%s(%d, %d, %d, %d, %d, %d, %d, %d,"
+ " 0x%x, 0x%x)\n", func,
+ srcX0, srcY0, srcX1, srcY1,
+ dstX0, dstY0, dstX1, dstY1,
+ mask, filter);
+
if (colorReadRb) {
const struct gl_renderbuffer_attachment *att;
att = find_attachment(readFb, colorReadRb);
printf(" Src FBO %u RB %u (%dx%d) ",
- readFb->Name, colorReadRb->Name,
- colorReadRb->Width, colorReadRb->Height);
+ readFb->Name, colorReadRb->Name,
+ colorReadRb->Width, colorReadRb->Height);
if (att && att->Texture) {
printf("Tex %u tgt 0x%x level %u face %u",
- att->Texture->Name,
- att->Texture->Target,
- att->TextureLevel,
- att->CubeMapFace);
+ att->Texture->Name,
+ att->Texture->Target,
+ att->TextureLevel,
+ att->CubeMapFace);
}
printf("\n");
/* Print all active color render buffers */
- for (i = 0; i < ctx->DrawBuffer->_NumColorDrawBuffers; i++) {
- colorDrawRb = ctx->DrawBuffer->_ColorDrawBuffers[i];
+ for (i = 0; i < drawFb->_NumColorDrawBuffers; i++) {
+ colorDrawRb = drawFb->_ColorDrawBuffers[i];
if (!colorDrawRb)
continue;
att = find_attachment(drawFb, colorDrawRb);
printf(" Dst FBO %u RB %u (%dx%d) ",
- drawFb->Name, colorDrawRb->Name,
- colorDrawRb->Width, colorDrawRb->Height);
+ drawFb->Name, colorDrawRb->Name,
+ colorDrawRb->Width, colorDrawRb->Height);
if (att && att->Texture) {
printf("Tex %u tgt 0x%x level %u face %u",
- att->Texture->Name,
- att->Texture->Target,
- att->TextureLevel,
- att->CubeMapFace);
+ att->Texture->Name,
+ att->Texture->Target,
+ att->TextureLevel,
+ att->CubeMapFace);
}
printf("\n");
}
}
assert(ctx->Driver.BlitFramebuffer);
- ctx->Driver.BlitFramebuffer(ctx, ctx->ReadBuffer, ctx->DrawBuffer,
+ ctx->Driver.BlitFramebuffer(ctx, readFb, drawFb,
srcX0, srcY0, srcX1, srcY1,
dstX0, dstY0, dstX1, dstY1,
mask, filter);
}
+
+
+/**
+ * Blit rectangular region, optionally from one framebuffer to another.
+ *
+ * Note, if the src buffer is multisampled and the dest is not, this is
+ * when the samples must be resolved to a single color.
+ */
+void GLAPIENTRY
+_mesa_BlitFramebuffer(GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1,
+ GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1,
+ GLbitfield mask, GLenum filter)
+{
+ GET_CURRENT_CONTEXT(ctx);
+
+ if (MESA_VERBOSE & VERBOSE_API)
+ _mesa_debug(ctx,
+ "glBlitFramebuffer(%d, %d, %d, %d, "
+ " %d, %d, %d, %d, 0x%x, %s)\n",
+ srcX0, srcY0, srcX1, srcY1,
+ dstX0, dstY0, dstX1, dstY1,
+ mask, _mesa_enum_to_string(filter));
+
+ _mesa_blit_framebuffer(ctx, ctx->ReadBuffer, ctx->DrawBuffer,
+ srcX0, srcY0, srcX1, srcY1,
+ dstX0, dstY0, dstX1, dstY1,
+ mask, filter, "glBlitFramebuffer");
+}
+
+
+void GLAPIENTRY
+_mesa_BlitNamedFramebuffer(GLuint readFramebuffer, GLuint drawFramebuffer,
+ GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1,
+ GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1,
+ GLbitfield mask, GLenum filter)
+{
+ GET_CURRENT_CONTEXT(ctx);
+ struct gl_framebuffer *readFb, *drawFb;
+
+ if (MESA_VERBOSE & VERBOSE_API)
+ _mesa_debug(ctx,
+ "glBlitNamedFramebuffer(%u %u %d, %d, %d, %d, "
+ " %d, %d, %d, %d, 0x%x, %s)\n",
+ readFramebuffer, drawFramebuffer,
+ srcX0, srcY0, srcX1, srcY1,
+ dstX0, dstY0, dstX1, dstY1,
+ mask, _mesa_enum_to_string(filter));
+
+ /*
+ * According to PDF page 533 of the OpenGL 4.5 core spec (30.10.2014,
+ * Section 18.3 Copying Pixels):
+ * "... if readFramebuffer or drawFramebuffer is zero (for
+ * BlitNamedFramebuffer), then the default read or draw framebuffer is
+ * used as the corresponding source or destination framebuffer,
+ * respectively."
+ */
+ if (readFramebuffer) {
+ readFb = _mesa_lookup_framebuffer_err(ctx, readFramebuffer,
+ "glBlitNamedFramebuffer");
+ if (!readFb)
+ return;
+ }
+ else
+ readFb = ctx->WinSysReadBuffer;
+
+ if (drawFramebuffer) {
+ drawFb = _mesa_lookup_framebuffer_err(ctx, drawFramebuffer,
+ "glBlitNamedFramebuffer");
+ if (!drawFb)
+ return;
+ }
+ else
+ drawFb = ctx->WinSysDrawBuffer;
+
+ _mesa_blit_framebuffer(ctx, readFb, drawFb,
+ srcX0, srcY0, srcX1, srcY1,
+ dstX0, dstY0, dstX1, dstY1,
+ mask, filter, "glBlitNamedFramebuffer");
+}
projects / mesa.git / blobdiff