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gallium: consolidate quad drawing code

tags/mesa_20090313
Brian Paul 17 anni fa
parent
b6d8b21cc8
commit
149a4175fa
1 ha cambiato i file con 90 aggiunte e 142 eliminazioni
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  1. 90
    142
      src/mesa/state_tracker/st_cb_drawpixels.c

+ 90
- 142
src/mesa/state_tracker/st_cb_drawpixels.c Vedi File

@@ -402,152 +402,105 @@ make_texture(struct st_context *st,


/**
* Draw textured quad.
* Draw quad with texcoords and optional color.
* Coords are window coords with y=0=bottom.
* \param color may be null
* \param invertTex if true, flip texcoords vertically
*/
static void
draw_quad(GLcontext *ctx, GLfloat x0, GLfloat y0, GLfloat z,
GLfloat x1, GLfloat y1, GLboolean invertTex)
GLfloat x1, GLfloat y1, const GLfloat *color,
GLboolean invertTex)
{
struct st_context *st = ctx->st;
struct pipe_context *pipe = ctx->st->pipe;
const struct gl_framebuffer *fb = st->ctx->DrawBuffer;
const GLfloat fb_width = fb->Width;
const GLfloat fb_height = fb->Height;
const GLfloat clip_x0 = x0 / fb_width * 2.0 - 1.0;
const GLfloat clip_y0 = y0 / fb_height * 2.0 - 1.0;
const GLfloat clip_x1 = x1 / fb_width * 2.0 - 1.0;
const GLfloat clip_y1 = y1 / fb_height * 2.0 - 1.0;
const GLfloat sLeft = 0.0, sRight = 1.0;
const GLfloat tTop = invertTex, tBot = 1.0 - tTop;
GLfloat verts[4][2][4]; /* four verts, two attribs, XYZW */
struct pipe_buffer *buf;
ubyte *map;
GLuint i;

/* upper-left */
verts[0][0][0] = clip_x0; /* attr[0].x */
verts[0][0][1] = clip_y0; /* attr[0].y */
verts[0][1][0] = sLeft; /* attr[1].s */
verts[0][1][1] = tTop; /* attr[1].t */

/* upper-right */
verts[1][0][0] = clip_x1;
verts[1][0][1] = clip_y0;
verts[1][1][0] = sRight;
verts[1][1][1] = tTop;

/* lower-right */
verts[2][0][0] = clip_x1;
verts[2][0][1] = clip_y1;
verts[2][1][0] = sRight;
verts[2][1][1] = tBot;

/* lower-left */
verts[3][0][0] = clip_x0;
verts[3][0][1] = clip_y1;
verts[3][1][0] = sLeft;
verts[3][1][1] = tBot;

/* same for all verts: */
for (i = 0; i < 4; i++) {
verts[i][0][2] = z; /*Z*/
verts[i][0][3] = 1.0; /*W*/
verts[i][1][2] = 0.0; /*R*/
verts[i][1][3] = 1.0; /*Q*/
}

buf = pipe->winsys->buffer_create(pipe->winsys, 32,
PIPE_BUFFER_USAGE_VERTEX,
sizeof(verts));
/* put vertex data into buffer */
map = pipe->winsys->buffer_map(pipe->winsys, buf,
PIPE_BUFFER_USAGE_CPU_WRITE);
memcpy(map, verts, sizeof(verts));
pipe->winsys->buffer_unmap(pipe->winsys, buf);

util_draw_vertex_buffer(pipe, buf,
PIPE_PRIM_QUADS,
4, /* verts */
2); /* attribs/vert */

pipe->winsys->buffer_destroy(pipe->winsys, buf);
}


static void
draw_quad_colored(GLcontext *ctx, GLfloat x0, GLfloat y0, GLfloat z,
GLfloat x1, GLfloat y1, const GLfloat *color,
GLboolean invertTex)
{
struct st_context *st = ctx->st;
struct pipe_context *pipe = ctx->st->pipe;
const struct gl_framebuffer *fb = st->ctx->DrawBuffer;
const GLfloat fb_width = fb->Width;
const GLfloat fb_height = fb->Height;
const GLfloat clip_x0 = x0 / fb_width * 2.0 - 1.0;
const GLfloat clip_y0 = y0 / fb_height * 2.0 - 1.0;
const GLfloat clip_x1 = x1 / fb_width * 2.0 - 1.0;
const GLfloat clip_y1 = y1 / fb_height * 2.0 - 1.0;
GLfloat bias = ctx->st->bitmap_texcoord_bias;
GLfloat verts[4][3][4]; /* four verts, three attribs, XYZW */
GLuint i;
GLfloat xBias = bias / (x1-x0);
GLfloat yBias = bias / (y1-y0);
GLfloat sLeft = 0.0 + xBias, sRight = 1.0 + xBias;
GLfloat tTop = invertTex - yBias, tBot = 1.0 - tTop - yBias;
struct pipe_buffer *buf;
ubyte *map;

/* upper-left */
verts[0][0][0] = clip_x0; /* attr[0].x */
verts[0][0][1] = clip_y0; /* attr[0].y */
verts[0][2][0] = sLeft; /* attr[2].s */
verts[0][2][1] = tTop; /* attr[2].t */

/* upper-right */
verts[1][0][0] = clip_x1;
verts[1][0][1] = clip_y0;
verts[1][2][0] = sRight;
verts[1][2][1] = tTop;

/* lower-right */
verts[2][0][0] = clip_x1;
verts[2][0][1] = clip_y1;
verts[2][2][0] = sRight;
verts[2][2][1] = tBot;

/* lower-left */
verts[3][0][0] = clip_x0;
verts[3][0][1] = clip_y1;
verts[3][2][0] = sLeft;
verts[3][2][1] = tBot;

/* same for all verts: */
for (i = 0; i < 4; i++) {
verts[i][0][2] = z; /*Z*/
verts[i][0][3] = 1.0; /*W*/
verts[i][1][0] = color[0];
verts[i][1][1] = color[1];
verts[i][1][2] = color[2];
verts[i][1][3] = color[3];
verts[i][2][2] = 0.0; /*R*/
verts[i][2][3] = 1.0; /*Q*/

/* setup vertex data */
{
const struct gl_framebuffer *fb = st->ctx->DrawBuffer;
const GLfloat fb_width = fb->Width;
const GLfloat fb_height = fb->Height;
const GLfloat clip_x0 = x0 / fb_width * 2.0 - 1.0;
const GLfloat clip_y0 = y0 / fb_height * 2.0 - 1.0;
const GLfloat clip_x1 = x1 / fb_width * 2.0 - 1.0;
const GLfloat clip_y1 = y1 / fb_height * 2.0 - 1.0;
GLfloat bias = ctx->st->bitmap_texcoord_bias;
GLfloat xBias = 0*bias / (x1-x0);
GLfloat yBias = 0*bias / (y1-y0);
GLfloat sLeft = 0.0 + xBias, sRight = 1.0 + xBias;
GLfloat tTop = invertTex - yBias, tBot = 1.0 - tTop - yBias;
GLuint tex, i;

/* upper-left */
verts[0][0][0] = clip_x0; /* v[0].attr[0].x */
verts[0][0][1] = clip_y0; /* v[0].attr[0].y */

/* upper-right */
verts[1][0][0] = clip_x1;
verts[1][0][1] = clip_y0;

/* lower-right */
verts[2][0][0] = clip_x1;
verts[2][0][1] = clip_y1;

/* lower-left */
verts[3][0][0] = clip_x0;
verts[3][0][1] = clip_y1;

tex = color ? 2 : 1;
verts[0][tex][0] = sLeft; /* v[0].attr[tex].s */
verts[0][tex][1] = tTop; /* v[0].attr[tex].t */
verts[1][tex][0] = sRight;
verts[1][tex][1] = tTop;
verts[2][tex][0] = sRight;
verts[2][tex][1] = tBot;
verts[3][tex][0] = sLeft;
verts[3][tex][1] = tBot;

/* same for all verts: */
if (color) {
for (i = 0; i < 4; i++) {
verts[i][0][2] = z; /*Z*/
verts[i][0][3] = 1.0; /*W*/
verts[i][1][0] = color[0];
verts[i][1][1] = color[1];
verts[i][1][2] = color[2];
verts[i][1][3] = color[3];
verts[i][2][2] = 0.0; /*R*/
verts[i][2][3] = 1.0; /*Q*/
}
}
else {
for (i = 0; i < 4; i++) {
verts[i][0][2] = z; /*Z*/
verts[i][0][3] = 1.0; /*W*/
verts[i][1][2] = 0.0; /*R*/
verts[i][1][3] = 1.0; /*Q*/
}
}
}

buf = pipe->winsys->buffer_create(pipe->winsys, 32,
PIPE_BUFFER_USAGE_VERTEX,
sizeof(verts));
/* put vertex data into buffer */
map = pipe->winsys->buffer_map(pipe->winsys, buf,
PIPE_BUFFER_USAGE_CPU_WRITE);
memcpy(map, verts, sizeof(verts));
pipe->winsys->buffer_unmap(pipe->winsys, buf);

util_draw_vertex_buffer(pipe, buf,
PIPE_PRIM_QUADS,
4, /* verts */
3); /* attribs/vert */
{
struct pipe_buffer *buf;
ubyte *map;

/* allocate/load buffer object with vertex data */
buf = pipe->winsys->buffer_create(pipe->winsys, 32,
PIPE_BUFFER_USAGE_VERTEX,
sizeof(verts));
map = pipe->winsys->buffer_map(pipe->winsys, buf,
PIPE_BUFFER_USAGE_CPU_WRITE);
memcpy(map, verts, sizeof(verts));
pipe->winsys->buffer_unmap(pipe->winsys, buf);

util_draw_vertex_buffer(pipe, buf,
PIPE_PRIM_QUADS,
4, /* verts */
3); /* attribs/vert */

pipe->winsys->buffer_destroy(pipe->winsys, buf);
}
}


@@ -653,12 +606,7 @@ draw_textured_quad(GLcontext *ctx, GLint x, GLint y, GLfloat z,
x1 = x + width * ctx->Pixel.ZoomX;
y0 = y;
y1 = y + height * ctx->Pixel.ZoomY;

/* draw textured quad */
if (color)
draw_quad_colored(ctx, x0, y0, z, x1, y1, color, invertTex);
else
draw_quad(ctx, x0, y0, z, x1, y1, invertTex);
draw_quad(ctx, x0, y0, z, x1, y1, color, invertTex);

/* restore state */
cso_restore_rasterizer(cso);

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