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Diffstat (limited to 'src/mesa/drivers/dri/i915pipe/intel_surface.c')
-rw-r--r--src/mesa/drivers/dri/i915pipe/intel_surface.c259
1 files changed, 259 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/i915pipe/intel_surface.c b/src/mesa/drivers/dri/i915pipe/intel_surface.c
new file mode 100644
index 0000000000..043c5aa5fe
--- /dev/null
+++ b/src/mesa/drivers/dri/i915pipe/intel_surface.c
@@ -0,0 +1,259 @@
+#include "glheader.h"
+#include "context.h"
+#include "framebuffer.h"
+#include "renderbuffer.h"
+#include "utils.h"
+#include "main/macros.h"
+
+
+#include "intel_screen.h"
+
+#include "intel_context.h"
+#include "intel_buffers.h"
+#include "intel_regions.h"
+#include "intel_span.h"
+#include "intel_fbo.h"
+
+#include "pipe/p_state.h"
+#include "pipe/p_defines.h"
+#include "pipe/softpipe/sp_surface.h"
+
+
+/*
+ * XXX a lof of this is a temporary kludge
+ */
+
+/**
+ * Note: the arithmetic/addressing in these functions is a little
+ * tricky since we need to invert the Y axis.
+ */
+
+
+static void
+read_quad_f_swz(struct softpipe_surface *sps, GLint x, GLint y,
+ GLfloat (*rrrr)[QUAD_SIZE])
+{
+ const GLint bytesPerRow = sps->surface.stride * sps->surface.cpp;
+ const GLint invY = sps->surface.height - y - 1;
+ const GLubyte *src = sps->surface.ptr + invY * bytesPerRow + x * sps->surface.cpp;
+ GLfloat *dst = (GLfloat *) rrrr;
+ GLubyte temp[16];
+ GLuint j;
+
+ assert(sps->surface.format == PIPE_FORMAT_U_A8_R8_G8_B8);
+
+ memcpy(temp + 8, src, 8);
+ memcpy(temp + 0, src + bytesPerRow, 8);
+
+ for (j = 0; j < 4; j++) {
+ dst[0 * 4 + j] = UBYTE_TO_FLOAT(temp[j * 4 + 2]); /*R*/
+ dst[1 * 4 + j] = UBYTE_TO_FLOAT(temp[j * 4 + 1]); /*G*/
+ dst[2 * 4 + j] = UBYTE_TO_FLOAT(temp[j * 4 + 0]); /*B*/
+ dst[3 * 4 + j] = UBYTE_TO_FLOAT(temp[j * 4 + 3]); /*A*/
+ }
+}
+
+
+static void
+write_quad_f_swz(struct softpipe_surface *sps, GLint x, GLint y,
+ GLfloat (*rrrr)[QUAD_SIZE])
+{
+ const GLfloat *src = (const GLfloat *) rrrr;
+ const GLint bytesPerRow = sps->surface.stride * sps->surface.cpp;
+ const GLint invY = sps->surface.height - y - 1;
+ GLubyte *dst = sps->surface.ptr + invY * bytesPerRow + x * sps->surface.cpp;
+ GLubyte temp[16];
+ GLuint j;
+
+ assert(sps->surface.format == PIPE_FORMAT_U_A8_R8_G8_B8);
+
+ for (j = 0; j < 4; j++) {
+ UNCLAMPED_FLOAT_TO_UBYTE(temp[j * 4 + 2], src[0 * 4 + j]); /*R*/
+ UNCLAMPED_FLOAT_TO_UBYTE(temp[j * 4 + 1], src[1 * 4 + j]); /*G*/
+ UNCLAMPED_FLOAT_TO_UBYTE(temp[j * 4 + 0], src[2 * 4 + j]); /*B*/
+ UNCLAMPED_FLOAT_TO_UBYTE(temp[j * 4 + 3], src[3 * 4 + j]); /*A*/
+ }
+
+ memcpy(dst, temp + 8, 8);
+ memcpy(dst + bytesPerRow, temp + 0, 8);
+}
+
+
+
+static void
+read_quad_z24(struct softpipe_surface *sps,
+ GLint x, GLint y, GLuint zzzz[QUAD_SIZE])
+{
+ static const GLuint mask = 0xffffff;
+ const GLint invY = sps->surface.height - y - 1;
+ const GLuint *src
+ = (GLuint *) (sps->surface.ptr
+ + (invY * sps->surface.stride + x) * sps->surface.cpp);
+
+ assert(sps->surface.format == PIPE_FORMAT_Z24_S8);
+
+ /* extract lower three bytes */
+ zzzz[0] = src[0] & mask;
+ zzzz[1] = src[1] & mask;
+ zzzz[2] = src[-sps->surface.stride] & mask;
+ zzzz[3] = src[-sps->surface.stride + 1] & mask;
+}
+
+static void
+write_quad_z24(struct softpipe_surface *sps,
+ GLint x, GLint y, const GLuint zzzz[QUAD_SIZE])
+{
+ static const GLuint mask = 0xff000000;
+ const GLint invY = sps->surface.height - y - 1;
+ GLuint *dst
+ = (GLuint *) (sps->surface.ptr
+ + (invY * sps->surface.stride + x) * sps->surface.cpp);
+
+ assert(sps->surface.format == PIPE_FORMAT_Z24_S8);
+
+ /* write lower three bytes */
+ dst[0] = (dst[0] & mask) | zzzz[0];
+ dst[1] = (dst[1] & mask) | zzzz[1];
+ dst -= sps->surface.stride;
+ dst[0] = (dst[0] & mask) | zzzz[2];
+ dst[1] = (dst[1] & mask) | zzzz[3];
+}
+
+
+static void
+read_quad_stencil(struct softpipe_surface *sps,
+ GLint x, GLint y, GLubyte ssss[QUAD_SIZE])
+{
+ const GLint invY = sps->surface.height - y - 1;
+ const GLuint *src = (const GLuint *) (sps->surface.ptr
+ + (invY * sps->surface.stride + x) * sps->surface.cpp);
+
+ assert(sps->surface.format == PIPE_FORMAT_Z24_S8);
+
+ /* extract high byte */
+ ssss[0] = src[0] >> 24;
+ ssss[1] = src[1] >> 24;
+ ssss[2] = src[-sps->surface.width] >> 24;
+ ssss[3] = src[-sps->surface.width + 1] >> 24;
+}
+
+static void
+write_quad_stencil(struct softpipe_surface *sps,
+ GLint x, GLint y, const GLubyte ssss[QUAD_SIZE])
+{
+ static const GLuint mask = 0x00ffffff;
+ const GLint invY = sps->surface.height - y - 1;
+ GLuint *dst = (GLuint *) (sps->surface.ptr
+ + (invY * sps->surface.stride + x) * sps->surface.cpp);
+
+ assert(sps->surface.format == PIPE_FORMAT_Z24_S8);
+
+ /* write high byte */
+ dst[0] = (dst[0] & mask) | (ssss[0] << 24);
+ dst[1] = (dst[1] & mask) | (ssss[1] << 24);
+ dst -= sps->surface.stride;
+ dst[0] = (dst[0] & mask) | (ssss[2] << 24);
+ dst[1] = (dst[1] & mask) | (ssss[3] << 24);
+}
+
+
+static void *
+map_surface_buffer(struct pipe_buffer *pb, GLuint access_mode)
+{
+ struct softpipe_surface *sps = (struct softpipe_surface *) pb;
+ struct intel_renderbuffer *irb = (struct intel_renderbuffer *) sps->surface.rb;
+ assert(access_mode == PIPE_MAP_READ_WRITE);
+
+ /*LOCK_HARDWARE(intel);*/
+
+ if (irb->region) {
+ GET_CURRENT_CONTEXT(ctx);
+ struct intel_context *intel = intel_context(ctx);
+#if 0
+ intelFinish(&intel->ctx); /* XXX need this? */
+#endif
+ intel_region_map(intel->intelScreen, irb->region);
+ }
+ pb->ptr = irb->region->map;
+
+ sps->surface.stride = irb->region->pitch;
+ sps->surface.cpp = irb->region->cpp;
+ sps->surface.ptr = irb->region->map;
+
+ return pb->ptr;
+}
+
+
+static void
+unmap_surface_buffer(struct pipe_buffer *pb)
+{
+ struct softpipe_surface *sps = (struct softpipe_surface *) pb;
+ struct intel_renderbuffer *irb = (struct intel_renderbuffer *) sps->surface.rb;
+
+ if (irb->region) {
+ GET_CURRENT_CONTEXT(ctx);
+ struct intel_context *intel = intel_context(ctx);
+ intel_region_unmap(intel->intelScreen, irb->region);
+ }
+ pb->ptr = NULL;
+
+ sps->surface.stride = 0;
+ sps->surface.cpp = 0;
+ sps->surface.ptr = NULL;
+
+ /*UNLOCK_HARDWARE(intel);*/
+}
+
+
+struct pipe_surface *
+intel_new_surface(GLuint intFormat)
+{
+ struct softpipe_surface *sps = CALLOC_STRUCT(softpipe_surface);
+ if (!sps)
+ return NULL;
+
+ sps->surface.width = 0; /* set in intel_alloc_renderbuffer_storage() */
+ sps->surface.height = 0;
+
+ if (intFormat == GL_RGBA8) {
+ sps->surface.format = PIPE_FORMAT_U_A8_R8_G8_B8;
+ sps->read_quad_f_swz = read_quad_f_swz;
+ sps->write_quad_f_swz = write_quad_f_swz;
+ }
+ else if (intFormat == GL_RGB5) {
+ sps->surface.format = PIPE_FORMAT_U_R5_G6_B5;
+
+ }
+ else if (intFormat == GL_DEPTH_COMPONENT16) {
+ sps->surface.format = PIPE_FORMAT_U_Z16;
+
+ }
+ else if (intFormat == GL_DEPTH24_STENCIL8_EXT) {
+ sps->surface.format = PIPE_FORMAT_Z24_S8;
+ sps->read_quad_z = read_quad_z24;
+ sps->write_quad_z = write_quad_z24;
+ sps->read_quad_stencil = read_quad_stencil;
+ sps->write_quad_stencil = write_quad_stencil;
+ }
+ else {
+ /* TBD / unknown */
+
+ }
+
+ sps->surface.buffer.map = map_surface_buffer;
+ sps->surface.buffer.unmap = unmap_surface_buffer;
+
+ return &sps->surface;
+}
+
+
+
+struct pipe_surface *
+xmesa_get_stencil_surface(GLcontext *ctx)
+{
+ /* XXX fix */
+ return NULL;
+}
+
+
+
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