diff options
Diffstat (limited to 'src/mesa/main')
| -rw-r--r-- | src/mesa/main/buffers.c | 13 | ||||
| -rw-r--r-- | src/mesa/main/framebuffer.c | 7 |
2 files changed, 20 insertions, 0 deletions
diff --git a/src/mesa/main/buffers.c b/src/mesa/main/buffers.c index 2be0fba4306..7eafaf88fc5 100644 --- a/src/mesa/main/buffers.c +++ b/src/mesa/main/buffers.c @@ -433,6 +433,11 @@ _mesa_DrawBuffersARB(GLsizei n, const GLenum *buffers) * output, but fragment programs can now have several distinct color * outputs (see GL_ARB_draw_buffers). This function sets the state * for one such color output. + * \param ctx current context + * \param output which fragment program output + * \param buffer buffer to write to (like GL_LEFT) + * \param destMask BUFFER_* bitmask + * (like BUFFER_BIT_FRONT_LEFT | BUFFER_BIT_BACK_LEFT). */ static void set_color_output(GLcontext *ctx, GLuint output, GLenum buffer, GLuint destMask) @@ -457,6 +462,14 @@ set_color_output(GLcontext *ctx, GLuint output, GLenum buffer, GLuint destMask) /** * Helper routine used by _mesa_DrawBuffer, _mesa_DrawBuffersARB and * _mesa_PopAttrib to set drawbuffer state. + * All error checking will have been done prior to calling this function + * so nothing should go wrong at this point. + * \param ctx current context + * \param n number of color outputs to set + * \param buffers array[n] of colorbuffer names, like GL_LEFT. + * \param destMask array[n] of BUFFER_* bitmasks which correspond to the + * colorbuffer names. (i.e. GL_FRONT_AND_BACK => + * BUFFER_BIT_FRONT_LEFT | BUFFER_BIT_BACK_LEFT). */ void _mesa_drawbuffers(GLcontext *ctx, GLsizei n, const GLenum *buffers, diff --git a/src/mesa/main/framebuffer.c b/src/mesa/main/framebuffer.c index c23c60948c9..271790c1caf 100644 --- a/src/mesa/main/framebuffer.c +++ b/src/mesa/main/framebuffer.c @@ -460,7 +460,14 @@ get_renderbuffer(struct gl_framebuffer *fb, GLuint bufferBit) /** * Update state related to the current draw/read framebuffers. + * Specifically, update these framebuffer fields: + * _ColorDrawBuffers + * _ColorDrawBit + * _NumColorDrawBuffers + * _ColorReadBuffer * If the current framebuffer is user-created, make sure it's complete. + * The following functions can effect this state: glReadBuffer, + * glDrawBuffer, glDrawBuffersARB, glFramebufferRenderbufferEXT. */ void _mesa_update_framebuffer(GLcontext *ctx) |