break;
case PIPE_PRIM_TRIANGLES:
- for (i = 2; i < nr; i += 3) {
- if (llvmpipe->rasterizer->flatshade_first) {
+ if (llvmpipe->rasterizer->flatshade_first) {
+ for (i = 2; i < nr; i += 3) {
llvmpipe_setup_tri( setup_ctx,
get_vert(vertex_buffer, indices[i-1], stride),
get_vert(vertex_buffer, indices[i-0], stride),
get_vert(vertex_buffer, indices[i-2], stride) );
}
- else {
+ }
+ else {
+ for (i = 2; i < nr; i += 3) {
llvmpipe_setup_tri( setup_ctx,
get_vert(vertex_buffer, indices[i-2], stride),
get_vert(vertex_buffer, indices[i-1], stride),
break;
case PIPE_PRIM_TRIANGLE_STRIP:
- for (i = 2; i < nr; i += 1) {
- if (llvmpipe->rasterizer->flatshade_first) {
+ if (llvmpipe->rasterizer->flatshade_first) {
+ for (i = 2; i < nr; i += 1) {
llvmpipe_setup_tri( setup_ctx,
get_vert(vertex_buffer, indices[i+(i&1)-1], stride),
get_vert(vertex_buffer, indices[i-(i&1)], stride),
get_vert(vertex_buffer, indices[i-2], stride) );
}
- else {
+ }
+ else {
+ for (i = 2; i < nr; i += 1) {
llvmpipe_setup_tri( setup_ctx,
get_vert(vertex_buffer, indices[i+(i&1)-2], stride),
get_vert(vertex_buffer, indices[i-(i&1)-1], stride),
break;
case PIPE_PRIM_TRIANGLE_FAN:
- for (i = 2; i < nr; i += 1) {
- if (llvmpipe->rasterizer->flatshade_first) {
+ if (llvmpipe->rasterizer->flatshade_first) {
+ for (i = 2; i < nr; i += 1) {
llvmpipe_setup_tri( setup_ctx,
get_vert(vertex_buffer, indices[i-0], stride),
get_vert(vertex_buffer, indices[0], stride),
get_vert(vertex_buffer, indices[i-1], stride) );
}
- else {
+ }
+ else {
+ for (i = 2; i < nr; i += 1) {
llvmpipe_setup_tri( setup_ctx,
get_vert(vertex_buffer, indices[0], stride),
get_vert(vertex_buffer, indices[i-1], stride),
break;
case PIPE_PRIM_QUADS:
- for (i = 3; i < nr; i += 4) {
- if (llvmpipe->rasterizer->flatshade_first) {
+ if (llvmpipe->rasterizer->flatshade_first) {
+ for (i = 3; i < nr; i += 4) {
llvmpipe_setup_tri( setup_ctx,
get_vert(vertex_buffer, indices[i-2], stride),
get_vert(vertex_buffer, indices[i-1], stride),
get_vert(vertex_buffer, indices[i-0], stride),
get_vert(vertex_buffer, indices[i-3], stride) );
}
- else {
+ }
+ else {
+ for (i = 3; i < nr; i += 4) {
llvmpipe_setup_tri( setup_ctx,
get_vert(vertex_buffer, indices[i-3], stride),
get_vert(vertex_buffer, indices[i-2], stride),
break;
case PIPE_PRIM_QUAD_STRIP:
- for (i = 3; i < nr; i += 2) {
- if (llvmpipe->rasterizer->flatshade_first) {
+ if (llvmpipe->rasterizer->flatshade_first) {
+ for (i = 3; i < nr; i += 2) {
llvmpipe_setup_tri( setup_ctx,
get_vert(vertex_buffer, indices[i-0], stride),
get_vert(vertex_buffer, indices[i-1], stride),
get_vert(vertex_buffer, indices[i-0], stride),
get_vert(vertex_buffer, indices[i-3], stride) );
}
- else {
+ }
+ else {
+ for (i = 3; i < nr; i += 2) {
llvmpipe_setup_tri( setup_ctx,
get_vert(vertex_buffer, indices[i-3], stride),
get_vert(vertex_buffer, indices[i-2], stride),
break;
case PIPE_PRIM_TRIANGLES:
- for (i = 2; i < nr; i += 3) {
- if (llvmpipe->rasterizer->flatshade_first) {
+ if (llvmpipe->rasterizer->flatshade_first) {
+ for (i = 2; i < nr; i += 3) {
llvmpipe_setup_tri( setup_ctx,
get_vert(vertex_buffer, i-1, stride),
get_vert(vertex_buffer, i-0, stride),
get_vert(vertex_buffer, i-2, stride) );
}
- else {
+ }
+ else {
+ for (i = 2; i < nr; i += 3) {
llvmpipe_setup_tri( setup_ctx,
get_vert(vertex_buffer, i-2, stride),
get_vert(vertex_buffer, i-1, stride),
break;
case PIPE_PRIM_TRIANGLE_STRIP:
- for (i = 2; i < nr; i++) {
- if (llvmpipe->rasterizer->flatshade_first) {
+ if (llvmpipe->rasterizer->flatshade_first) {
+ for (i = 2; i < nr; i++) {
llvmpipe_setup_tri( setup_ctx,
get_vert(vertex_buffer, i+(i&1)-1, stride),
get_vert(vertex_buffer, i-(i&1), stride),
get_vert(vertex_buffer, i-2, stride) );
}
- else {
+ }
+ else {
+ for (i = 2; i < nr; i++) {
llvmpipe_setup_tri( setup_ctx,
get_vert(vertex_buffer, i+(i&1)-2, stride),
get_vert(vertex_buffer, i-(i&1)-1, stride),
break;
case PIPE_PRIM_TRIANGLE_FAN:
- for (i = 2; i < nr; i += 1) {
- if (llvmpipe->rasterizer->flatshade_first) {
+ if (llvmpipe->rasterizer->flatshade_first) {
+ for (i = 2; i < nr; i += 1) {
llvmpipe_setup_tri( setup_ctx,
get_vert(vertex_buffer, i-0, stride),
get_vert(vertex_buffer, 0, stride),
get_vert(vertex_buffer, i-1, stride) );
}
- else {
+ }
+ else {
+ for (i = 2; i < nr; i += 1) {
llvmpipe_setup_tri( setup_ctx,
get_vert(vertex_buffer, 0, stride),
get_vert(vertex_buffer, i-1, stride),
break;
case PIPE_PRIM_QUADS:
- for (i = 3; i < nr; i += 4) {
- if (llvmpipe->rasterizer->flatshade_first) {
+ if (llvmpipe->rasterizer->flatshade_first) {
+ for (i = 3; i < nr; i += 4) {
llvmpipe_setup_tri( setup_ctx,
get_vert(vertex_buffer, i-2, stride),
get_vert(vertex_buffer, i-1, stride),
get_vert(vertex_buffer, i-0, stride),
get_vert(vertex_buffer, i-3, stride) );
}
- else {
+ }
+ else {
+ for (i = 3; i < nr; i += 4) {
llvmpipe_setup_tri( setup_ctx,
get_vert(vertex_buffer, i-3, stride),
get_vert(vertex_buffer, i-2, stride),
break;
case PIPE_PRIM_QUAD_STRIP:
- for (i = 3; i < nr; i += 2) {
- if (llvmpipe->rasterizer->flatshade_first) {
+ if (llvmpipe->rasterizer->flatshade_first) {
+ for (i = 3; i < nr; i += 2) {
llvmpipe_setup_tri( setup_ctx,
get_vert(vertex_buffer, i-0, stride),
get_vert(vertex_buffer, i-1, stride),
get_vert(vertex_buffer, i-0, stride),
get_vert(vertex_buffer, i-3, stride) );
}
- else {
+ }
+ else {
+ for (i = 3; i < nr; i += 2) {
llvmpipe_setup_tri( setup_ctx,
get_vert(vertex_buffer, i-3, stride),
get_vert(vertex_buffer, i-2, stride),
#include "lp_tex_cache.h"
#include "pipe/p_context.h"
#include "pipe/p_defines.h"
+#include "pipe/p_shader_tokens.h"
#include "util/u_math.h"
#include "util/u_memory.h"
* This is only done for fragment shaders, not vertex shaders.
*/
static float
-compute_lambda(const struct pipe_texture *tex,
- const struct pipe_sampler_state *sampler,
+compute_lambda(struct tgsi_sampler *tgsi_sampler,
const float s[QUAD_SIZE],
const float t[QUAD_SIZE],
const float p[QUAD_SIZE],
float lodbias)
{
+ const struct lp_shader_sampler *samp = lp_shader_sampler(tgsi_sampler);
+ const struct pipe_texture *texture = samp->texture;
+ const struct pipe_sampler_state *sampler = samp->sampler;
float rho, lambda;
+ if (samp->processor == TGSI_PROCESSOR_VERTEX)
+ return lodbias;
+
assert(sampler->normalized_coords);
assert(s);
float dsdy = s[QUAD_TOP_LEFT] - s[QUAD_BOTTOM_LEFT];
dsdx = fabsf(dsdx);
dsdy = fabsf(dsdy);
- rho = MAX2(dsdx, dsdy) * tex->width[0];
+ rho = MAX2(dsdx, dsdy) * texture->width[0];
}
if (t) {
float dtdx = t[QUAD_BOTTOM_RIGHT] - t[QUAD_BOTTOM_LEFT];
float max;
dtdx = fabsf(dtdx);
dtdy = fabsf(dtdy);
- max = MAX2(dtdx, dtdy) * tex->height[0];
+ max = MAX2(dtdx, dtdy) * texture->height[0];
rho = MAX2(rho, max);
}
if (p) {
float max;
dpdx = fabsf(dpdx);
dpdy = fabsf(dpdy);
- max = MAX2(dpdx, dpdy) * tex->depth[0];
+ max = MAX2(dpdx, dpdy) * texture->depth[0];
rho = MAX2(rho, max);
}
* \param imgFilter Returns either the min or mag filter, depending on lambda
*/
static void
-choose_mipmap_levels(const struct pipe_texture *texture,
- const struct pipe_sampler_state *sampler,
+choose_mipmap_levels(struct tgsi_sampler *tgsi_sampler,
const float s[QUAD_SIZE],
const float t[QUAD_SIZE],
const float p[QUAD_SIZE],
- boolean computeLambda,
float lodbias,
unsigned *level0, unsigned *level1, float *levelBlend,
unsigned *imgFilter)
{
+ const struct lp_shader_sampler *samp = lp_shader_sampler(tgsi_sampler);
+ const struct pipe_texture *texture = samp->texture;
+ const struct pipe_sampler_state *sampler = samp->sampler;
+
if (sampler->min_mip_filter == PIPE_TEX_MIPFILTER_NONE) {
/* no mipmap selection needed */
*level0 = *level1 = CLAMP((int) sampler->min_lod,
/* non-mipmapped texture, but still need to determine if doing
* minification or magnification.
*/
- float lambda = compute_lambda(texture, sampler, s, t, p, lodbias);
+ float lambda = compute_lambda(tgsi_sampler, s, t, p, lodbias);
if (lambda <= 0.0) {
*imgFilter = sampler->mag_img_filter;
}
}
}
else {
- float lambda;
-
- if (computeLambda)
- /* fragment shader */
- lambda = compute_lambda(texture, sampler, s, t, p, lodbias);
- else
- /* vertex shader */
- lambda = lodbias; /* not really a bias, but absolute LOD */
+ float lambda = compute_lambda(tgsi_sampler, s, t, p, lodbias);
if (lambda <= 0.0) { /* XXX threshold depends on the filter */
/* magnifying */
* XXX maybe move this into lp_tile_cache.c and merge with the
* lp_get_cached_tile_tex() function. Also, get 4 texels instead of 1...
*/
+static void
+get_texel_quad_2d(const struct tgsi_sampler *tgsi_sampler,
+ unsigned face, unsigned level, int x, int y,
+ const float *out[4])
+{
+ const struct lp_shader_sampler *samp = lp_shader_sampler(tgsi_sampler);
+
+ const struct llvmpipe_cached_tex_tile *tile
+ = lp_get_cached_tex_tile(samp->cache,
+ tex_tile_address(x, y, 0, face, level));
+
+ y %= TEX_TILE_SIZE;
+ x %= TEX_TILE_SIZE;
+
+ out[0] = &tile->color[y ][x ][0];
+ out[1] = &tile->color[y ][x+1][0];
+ out[2] = &tile->color[y+1][x ][0];
+ out[3] = &tile->color[y+1][x+1][0];
+}
+
+static INLINE const float *
+get_texel_2d_ptr(const struct tgsi_sampler *tgsi_sampler,
+ unsigned face, unsigned level, int x, int y)
+{
+ const struct lp_shader_sampler *samp = lp_shader_sampler(tgsi_sampler);
+
+ const struct llvmpipe_cached_tex_tile *tile
+ = lp_get_cached_tex_tile(samp->cache,
+ tex_tile_address(x, y, 0, face, level));
+
+ y %= TEX_TILE_SIZE;
+ x %= TEX_TILE_SIZE;
+
+ return &tile->color[y][x][0];
+}
+
+
+static void
+get_texel_quad_2d_mt(const struct tgsi_sampler *tgsi_sampler,
+ unsigned face, unsigned level,
+ int x0, int y0,
+ int x1, int y1,
+ const float *out[4])
+{
+ unsigned i;
+
+ for (i = 0; i < 4; i++) {
+ unsigned tx = (i & 1) ? x1 : x0;
+ unsigned ty = (i >> 1) ? y1 : y0;
+
+ out[i] = get_texel_2d_ptr( tgsi_sampler, face, level, tx, ty );
+ }
+}
+
static void
get_texel(const struct tgsi_sampler *tgsi_sampler,
- unsigned face, unsigned level, int x, int y, int z,
- float rgba[NUM_CHANNELS][QUAD_SIZE], unsigned j)
+ unsigned face, unsigned level, int x, int y, int z,
+ float rgba[NUM_CHANNELS][QUAD_SIZE], unsigned j)
{
const struct lp_shader_sampler *samp = lp_shader_sampler(tgsi_sampler);
const struct pipe_texture *texture = samp->texture;
}
+
+static void
+lp_get_samples_2d_linear_repeat_POT(struct tgsi_sampler *tgsi_sampler,
+ const float s[QUAD_SIZE],
+ const float t[QUAD_SIZE],
+ const float p[QUAD_SIZE],
+ float lodbias,
+ float rgba[NUM_CHANNELS][QUAD_SIZE])
+{
+ const struct lp_shader_sampler *samp = lp_shader_sampler(tgsi_sampler);
+ unsigned j;
+ unsigned level = samp->level;
+ unsigned xpot = 1 << (samp->xpot - level);
+ unsigned ypot = 1 << (samp->ypot - level);
+ unsigned xmax = (xpot - 1) & (TEX_TILE_SIZE - 1); /* MIN2(TEX_TILE_SIZE, xpot) - 1; */
+ unsigned ymax = (ypot - 1) & (TEX_TILE_SIZE - 1); /* MIN2(TEX_TILE_SIZE, ypot) - 1; */
+
+ for (j = 0; j < QUAD_SIZE; j++) {
+ int c;
+
+ float u = s[j] * xpot - 0.5F;
+ float v = t[j] * ypot - 0.5F;
+
+ int uflr = util_ifloor(u);
+ int vflr = util_ifloor(v);
+
+ float xw = u - (float)uflr;
+ float yw = v - (float)vflr;
+
+ int x0 = uflr & (xpot - 1);
+ int y0 = vflr & (ypot - 1);
+
+ const float *tx[4];
+
+
+ /* Can we fetch all four at once:
+ */
+ if (x0 < xmax && y0 < ymax)
+ {
+ get_texel_quad_2d(tgsi_sampler, 0, level, x0, y0, tx);
+ }
+ else
+ {
+ unsigned x1 = (x0 + 1) & (xpot - 1);
+ unsigned y1 = (y0 + 1) & (ypot - 1);
+ get_texel_quad_2d_mt(tgsi_sampler, 0, level,
+ x0, y0, x1, y1, tx);
+ }
+
+
+ /* interpolate R, G, B, A */
+ for (c = 0; c < 4; c++) {
+ rgba[c][j] = lerp_2d(xw, yw,
+ tx[0][c], tx[1][c],
+ tx[2][c], tx[3][c]);
+ }
+ }
+}
+
+
+static void
+lp_get_samples_2d_nearest_repeat_POT(struct tgsi_sampler *tgsi_sampler,
+ const float s[QUAD_SIZE],
+ const float t[QUAD_SIZE],
+ const float p[QUAD_SIZE],
+ float lodbias,
+ float rgba[NUM_CHANNELS][QUAD_SIZE])
+{
+ const struct lp_shader_sampler *samp = lp_shader_sampler(tgsi_sampler);
+ unsigned j;
+ unsigned level = samp->level;
+ unsigned xpot = 1 << (samp->xpot - level);
+ unsigned ypot = 1 << (samp->ypot - level);
+
+ for (j = 0; j < QUAD_SIZE; j++) {
+ int c;
+
+ float u = s[j] * xpot;
+ float v = t[j] * ypot;
+
+ int uflr = util_ifloor(u);
+ int vflr = util_ifloor(v);
+
+ int x0 = uflr & (xpot - 1);
+ int y0 = vflr & (ypot - 1);
+
+ const float *out = get_texel_2d_ptr(tgsi_sampler, 0, level, x0, y0);
+
+ for (c = 0; c < 4; c++) {
+ rgba[c][j] = out[c];
+ }
+ }
+}
+
+
+static void
+lp_get_samples_2d_nearest_clamp_POT(struct tgsi_sampler *tgsi_sampler,
+ const float s[QUAD_SIZE],
+ const float t[QUAD_SIZE],
+ const float p[QUAD_SIZE],
+ float lodbias,
+ float rgba[NUM_CHANNELS][QUAD_SIZE])
+{
+ const struct lp_shader_sampler *samp = lp_shader_sampler(tgsi_sampler);
+ unsigned j;
+ unsigned level = samp->level;
+ unsigned xpot = 1 << (samp->xpot - level);
+ unsigned ypot = 1 << (samp->ypot - level);
+
+ for (j = 0; j < QUAD_SIZE; j++) {
+ int c;
+
+ float u = s[j] * xpot;
+ float v = t[j] * ypot;
+
+ int x0, y0;
+ const float *out;
+
+ x0 = util_ifloor(u);
+ if (x0 < 0)
+ x0 = 0;
+ else if (x0 > xpot - 1)
+ x0 = xpot - 1;
+
+ y0 = util_ifloor(v);
+ if (y0 < 0)
+ y0 = 0;
+ else if (y0 > ypot - 1)
+ y0 = ypot - 1;
+
+ out = get_texel_2d_ptr(tgsi_sampler, 0, level, x0, y0);
+
+ for (c = 0; c < 4; c++) {
+ rgba[c][j] = out[c];
+ }
+ }
+}
+
+
+static void
+lp_get_samples_2d_linear_mip_linear_repeat_POT(struct tgsi_sampler *tgsi_sampler,
+ const float s[QUAD_SIZE],
+ const float t[QUAD_SIZE],
+ const float p[QUAD_SIZE],
+ float lodbias,
+ float rgba[NUM_CHANNELS][QUAD_SIZE])
+{
+ struct lp_shader_sampler *samp = lp_shader_sampler(tgsi_sampler);
+ const struct pipe_texture *texture = samp->texture;
+ int level0;
+ float lambda;
+
+ lambda = compute_lambda(tgsi_sampler, s, t, p, lodbias);
+ level0 = (int)lambda;
+
+ if (lambda < 0.0) {
+ samp->level = 0;
+ lp_get_samples_2d_linear_repeat_POT( tgsi_sampler,
+ s, t, p, 0, rgba );
+ }
+ else if (level0 >= texture->last_level) {
+ samp->level = texture->last_level;
+ lp_get_samples_2d_linear_repeat_POT( tgsi_sampler,
+ s, t, p, 0, rgba );
+ }
+ else {
+ float levelBlend = lambda - level0;
+ float rgba0[4][4];
+ float rgba1[4][4];
+ int c,j;
+
+ samp->level = level0;
+ lp_get_samples_2d_linear_repeat_POT( tgsi_sampler,
+ s, t, p, 0, rgba0 );
+
+ samp->level = level0+1;
+ lp_get_samples_2d_linear_repeat_POT( tgsi_sampler,
+ s, t, p, 0, rgba1 );
+
+ for (j = 0; j < QUAD_SIZE; j++) {
+ for (c = 0; c < 4; c++) {
+ rgba[c][j] = lerp(levelBlend, rgba0[c][j], rgba1[c][j]);
+ }
+ }
+ }
+}
+
/**
* Common code for sampling 1D/2D/cube textures.
* Could probably extend for 3D...
*/
static void
-lp_get_samples_2d_common(const struct tgsi_sampler *tgsi_sampler,
+lp_get_samples_2d_common(struct tgsi_sampler *tgsi_sampler,
const float s[QUAD_SIZE],
const float t[QUAD_SIZE],
const float p[QUAD_SIZE],
- boolean computeLambda,
float lodbias,
float rgba[NUM_CHANNELS][QUAD_SIZE],
const unsigned faces[4])
int width, height;
float levelBlend;
- choose_mipmap_levels(texture, sampler, s, t, p, computeLambda, lodbias,
+ choose_mipmap_levels(tgsi_sampler, s, t, p,
+ lodbias,
&level0, &level1, &levelBlend, &imgFilter);
assert(sampler->normalized_coords);
if (level0 != level1) {
/* get texels from second mipmap level and blend */
float rgba2[4][4];
+
+ /* XXX: This is incorrect -- will often end up with (x0
+ * == x1 && y0 == y1), meaning that we fetch the same
+ * texel four times and linearly interpolate between
+ * identical values. The correct approach would be to
+ * call linear_texcoord again for the second level.
+ */
x0[j] /= 2;
y0[j] /= 2;
x1[j] /= 2;
static INLINE void
-lp_get_samples_1d(const struct tgsi_sampler *sampler,
+lp_get_samples_1d(struct tgsi_sampler *sampler,
const float s[QUAD_SIZE],
const float t[QUAD_SIZE],
const float p[QUAD_SIZE],
- boolean computeLambda,
float lodbias,
float rgba[NUM_CHANNELS][QUAD_SIZE])
{
static const unsigned faces[4] = {0, 0, 0, 0};
static const float tzero[4] = {0, 0, 0, 0};
lp_get_samples_2d_common(sampler, s, tzero, NULL,
- computeLambda, lodbias, rgba, faces);
+ lodbias, rgba, faces);
}
static INLINE void
-lp_get_samples_2d(const struct tgsi_sampler *sampler,
+lp_get_samples_2d(struct tgsi_sampler *sampler,
const float s[QUAD_SIZE],
const float t[QUAD_SIZE],
const float p[QUAD_SIZE],
- boolean computeLambda,
float lodbias,
float rgba[NUM_CHANNELS][QUAD_SIZE])
{
static const unsigned faces[4] = {0, 0, 0, 0};
lp_get_samples_2d_common(sampler, s, t, p,
- computeLambda, lodbias, rgba, faces);
+ lodbias, rgba, faces);
}
static INLINE void
-lp_get_samples_3d(const struct tgsi_sampler *tgsi_sampler,
+lp_get_samples_3d(struct tgsi_sampler *tgsi_sampler,
const float s[QUAD_SIZE],
const float t[QUAD_SIZE],
const float p[QUAD_SIZE],
- boolean computeLambda,
float lodbias,
float rgba[NUM_CHANNELS][QUAD_SIZE])
{
float levelBlend;
const uint face = 0;
- choose_mipmap_levels(texture, sampler, s, t, p, computeLambda, lodbias,
+ choose_mipmap_levels(tgsi_sampler, s, t, p,
+ lodbias,
&level0, &level1, &levelBlend, &imgFilter);
assert(sampler->normalized_coords);
static void
-lp_get_samples_cube(const struct tgsi_sampler *sampler,
+lp_get_samples_cube(struct tgsi_sampler *sampler,
const float s[QUAD_SIZE],
const float t[QUAD_SIZE],
const float p[QUAD_SIZE],
- boolean computeLambda,
float lodbias,
float rgba[NUM_CHANNELS][QUAD_SIZE])
{
faces[j] = choose_cube_face(s[j], t[j], p[j], ssss + j, tttt + j);
}
lp_get_samples_2d_common(sampler, ssss, tttt, NULL,
- computeLambda, lodbias, rgba, faces);
+ lodbias, rgba, faces);
}
static void
-lp_get_samples_rect(const struct tgsi_sampler *tgsi_sampler,
+lp_get_samples_rect(struct tgsi_sampler *tgsi_sampler,
const float s[QUAD_SIZE],
const float t[QUAD_SIZE],
const float p[QUAD_SIZE],
- boolean computeLambda,
float lodbias,
float rgba[NUM_CHANNELS][QUAD_SIZE])
{
int width, height;
float levelBlend;
- choose_mipmap_levels(texture, sampler, s, t, p, computeLambda, lodbias,
+ choose_mipmap_levels(tgsi_sampler, s, t, p,
+ lodbias,
&level0, &level1, &levelBlend, &imgFilter);
/* texture RECTS cannot be mipmapped */
/**
- * Common code for vertex/fragment program texture sampling.
+ * Error condition handler
*/
static INLINE void
+lp_get_samples_null(struct tgsi_sampler *tgsi_sampler,
+ const float s[QUAD_SIZE],
+ const float t[QUAD_SIZE],
+ const float p[QUAD_SIZE],
+ float lodbias,
+ float rgba[NUM_CHANNELS][QUAD_SIZE])
+{
+ int i,j;
+
+ for (i = 0; i < 4; i++)
+ for (j = 0; j < 4; j++)
+ rgba[i][j] = 1.0;
+}
+
+/**
+ * Called via tgsi_sampler::get_samples() when using a sampler for the
+ * first time. Determine the actual sampler function, link it in and
+ * call it.
+ */
+void
lp_get_samples(struct tgsi_sampler *tgsi_sampler,
const float s[QUAD_SIZE],
const float t[QUAD_SIZE],
const float p[QUAD_SIZE],
- boolean computeLambda,
float lodbias,
float rgba[NUM_CHANNELS][QUAD_SIZE])
{
- const struct lp_shader_sampler *samp = lp_shader_sampler(tgsi_sampler);
+ struct lp_shader_sampler *samp = lp_shader_sampler(tgsi_sampler);
const struct pipe_texture *texture = samp->texture;
const struct pipe_sampler_state *sampler = samp->sampler;
- if (!texture)
- return;
+ /* Default to the 'undefined' case:
+ */
+ tgsi_sampler->get_samples = lp_get_samples_null;
+
+ if (!texture) {
+ assert(0); /* is this legal?? */
+ goto out;
+ }
+
+ if (!sampler->normalized_coords) {
+ assert (texture->target == PIPE_TEXTURE_2D);
+ tgsi_sampler->get_samples = lp_get_samples_rect;
+ goto out;
+ }
switch (texture->target) {
case PIPE_TEXTURE_1D:
- assert(sampler->normalized_coords);
- lp_get_samples_1d(tgsi_sampler, s, t, p, computeLambda, lodbias, rgba);
+ tgsi_sampler->get_samples = lp_get_samples_1d;
break;
case PIPE_TEXTURE_2D:
- if (sampler->normalized_coords)
- lp_get_samples_2d(tgsi_sampler, s, t, p, computeLambda, lodbias, rgba);
- else
- lp_get_samples_rect(tgsi_sampler, s, t, p, computeLambda, lodbias, rgba);
+ tgsi_sampler->get_samples = lp_get_samples_2d;
break;
case PIPE_TEXTURE_3D:
- assert(sampler->normalized_coords);
- lp_get_samples_3d(tgsi_sampler, s, t, p, computeLambda, lodbias, rgba);
+ tgsi_sampler->get_samples = lp_get_samples_3d;
break;
case PIPE_TEXTURE_CUBE:
- assert(sampler->normalized_coords);
- lp_get_samples_cube(tgsi_sampler, s, t, p, computeLambda, lodbias, rgba);
+ tgsi_sampler->get_samples = lp_get_samples_cube;
break;
default:
assert(0);
+ break;
}
-#if 0 /* DEBUG */
+ /* Do this elsewhere:
+ */
+ samp->xpot = util_unsigned_logbase2( samp->texture->width[0] );
+ samp->ypot = util_unsigned_logbase2( samp->texture->height[0] );
+
+ /* Try to hook in a faster sampler. Ultimately we'll have to
+ * code-generate these. Luckily most of this looks like it is
+ * orthogonal state within the sampler.
+ */
+ if (texture->target == PIPE_TEXTURE_2D &&
+ sampler->min_img_filter == sampler->mag_img_filter &&
+ sampler->wrap_s == sampler->wrap_t &&
+ sampler->compare_mode == FALSE &&
+ sampler->normalized_coords)
{
- int i;
- printf("Sampled at %f, %f, %f:\n", s[0], t[0], p[0]);
- for (i = 0; i < 4; i++) {
- printf("Frag %d: %f %f %f %f\n", i,
- rgba[0][i],
- rgba[1][i],
- rgba[2][i],
- rgba[3][i]);
+ if (sampler->min_mip_filter == PIPE_TEX_MIPFILTER_NONE) {
+ samp->level = CLAMP((int) sampler->min_lod,
+ 0, (int) texture->last_level);
+
+ if (sampler->wrap_s == PIPE_TEX_WRAP_REPEAT) {
+ switch (sampler->min_img_filter) {
+ case PIPE_TEX_FILTER_NEAREST:
+ tgsi_sampler->get_samples = lp_get_samples_2d_nearest_repeat_POT;
+ break;
+ case PIPE_TEX_FILTER_LINEAR:
+ tgsi_sampler->get_samples = lp_get_samples_2d_linear_repeat_POT;
+ break;
+ default:
+ break;
+ }
+ }
+ else if (sampler->wrap_s == PIPE_TEX_WRAP_CLAMP) {
+ switch (sampler->min_img_filter) {
+ case PIPE_TEX_FILTER_NEAREST:
+ tgsi_sampler->get_samples = lp_get_samples_2d_nearest_clamp_POT;
+ break;
+ default:
+ break;
+ }
+ }
+ }
+ else if (sampler->min_mip_filter == PIPE_TEX_MIPFILTER_LINEAR) {
+ if (sampler->wrap_s == PIPE_TEX_WRAP_REPEAT) {
+ switch (sampler->min_img_filter) {
+ case PIPE_TEX_FILTER_LINEAR:
+ tgsi_sampler->get_samples = lp_get_samples_2d_linear_mip_linear_repeat_POT;
+ break;
+ default:
+ break;
+ }
+ }
}
}
-#endif
-}
-
+ else if (0) {
+ _debug_printf("target %d/%d min_mip %d/%d min_img %d/%d wrap %d/%d compare %d/%d norm %d/%d\n",
+ texture->target, PIPE_TEXTURE_2D,
+ sampler->min_mip_filter, PIPE_TEX_MIPFILTER_NONE,
+ sampler->min_img_filter, sampler->mag_img_filter,
+ sampler->wrap_s, sampler->wrap_t,
+ sampler->compare_mode, FALSE,
+ sampler->normalized_coords, TRUE);
+ }
-/**
- * Called via tgsi_sampler::get_samples() when running a fragment shader.
- * Get four filtered RGBA values from the sampler's texture.
- */
-void
-lp_get_samples_fragment(struct tgsi_sampler *tgsi_sampler,
- const float s[QUAD_SIZE],
- const float t[QUAD_SIZE],
- const float p[QUAD_SIZE],
- float lodbias,
- float rgba[NUM_CHANNELS][QUAD_SIZE])
-{
- lp_get_samples(tgsi_sampler, s, t, p, TRUE, lodbias, rgba);
+out:
+ tgsi_sampler->get_samples( tgsi_sampler, s, t, p, lodbias, rgba );
}
-
-/**
- * Called via tgsi_sampler::get_samples() when running a vertex shader.
- * Get four filtered RGBA values from the sampler's texture.
- */
-void
-lp_get_samples_vertex(struct tgsi_sampler *tgsi_sampler,
- const float s[QUAD_SIZE],
- const float t[QUAD_SIZE],
- const float p[QUAD_SIZE],
- float lodbias,
- float rgba[NUM_CHANNELS][QUAD_SIZE])
-{
- lp_get_samples(tgsi_sampler, s, t, p, FALSE, lodbias, rgba);
-}
projects / mesa.git / commitdiff