AlexIndustrial/mesa
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

new comments, ideas

Browse Source
This commit is contained in:
Brian
2007-01-25 10:51:53 -07:00
parent e713c21bd0
commit 5ef553da9a
1 changed files with 22 additions and 21 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/mesa/swrast/s_context.h
+22 -21
View File
@@ -86,11 +86,12 @@ struct arrays2 {
#endif
/**
* \sw_span_arrays
* \brief Arrays of fragment values.
*
* These will either be computed from the x/xStep values above or
* These will either be computed from the span x/xStep values or
* filled in by glDraw/CopyPixels, etc.
* These arrays are separated out of sw_span to conserve memory.
*/
@@ -114,15 +115,25 @@ typedef struct sw_span_arrays {
GLchan (*rgba)[4];
GLchan (*spec)[4];
GLuint index[MAX_WIDTH];
GLint x[MAX_WIDTH]; /**< X/Y used for point/line rendering only */
GLint y[MAX_WIDTH]; /**< X/Y used for point/line rendering only */
GLuint z[MAX_WIDTH];
#if 0
/* XXX rearrange and unify these arrays to so that we can
* index all fragment inputs with the FRAG_ATTRIB_* values:
*/
GLfloat attribs[FRAG_ATTRIB_MAX][MAX_WIDTH][4];
/*OR*/
typedef GLfloat (*array4f)[4];
array4f attribs[FRAG_ATTRIB_MAX];
#endif
GLint x[MAX_WIDTH]; /**< fragment X coords */
GLint y[MAX_WIDTH]; /**< fragment Y coords */
GLuint z[MAX_WIDTH]; /**< fragment Z coords */
GLuint index[MAX_WIDTH]; /**< Color indexes */
GLfloat fog[MAX_WIDTH];
GLfloat texcoords[MAX_TEXTURE_COORD_UNITS][MAX_WIDTH][4];
GLfloat lambda[MAX_TEXTURE_COORD_UNITS][MAX_WIDTH];
GLfloat coverage[MAX_WIDTH];
GLfloat varying[MAX_WIDTH][MAX_VARYING][4];
GLfloat coverage[MAX_WIDTH]; /**< Fragment coverage for AA/smoothing */
GLfloat varying[MAX_VARYING][MAX_WIDTH][4]; /**< For shaders */
/** This mask indicates which fragments are alive or culled */
GLubyte mask[MAX_WIDTH];
@@ -130,21 +141,11 @@ typedef struct sw_span_arrays {
/**
* \SWspan
* \brief Contains data for either a horizontal line or a set of
* pixels that are passed through a pipeline of functions before being
* drawn.
*
* The sw_span structure describes the colors, Z, fogcoord, texcoords,
* The SWspan structure describes the colors, Z, fogcoord, texcoords,
* etc for either a horizontal run or an array of independent pixels.
* We can either specify a base/step to indicate interpolated values, or
* fill in arrays of values. The interpMask and arrayMask bitfields
* indicate which are active.
*
* With this structure it's easy to hand-off span rasterization to
* subroutines instead of doing it all inline in the triangle functions
* like we used to do.
* It also cleans up the local variable namespace a great deal.
* fill in explicit arrays of values. The interpMask and arrayMask bitfields
* indicate which attributes are active interpolants or arrays, respectively.
*
* It would be interesting to experiment with multiprocessor rasterization
* with this structure. The triangle rasterizer could simply emit a
@@ -225,7 +226,7 @@ typedef struct sw_span {
/**
* We store the arrays of fragment values in a separate struct so
* that we can allocate sw_span structs on the stack without using
* a lot of memory. The span_arrays struct is about 400KB while the
* a lot of memory. The span_arrays struct is about 1.4MB while the
* sw_span struct is only about 512 bytes.
*/
SWspanarrays *array;