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Add an option to 'testsprite2' to render slicing into triangles. 

[--use-rendergeometry mode1|mode2]
mode1: Draw sprite2 as triangles that can be recombined as rect by software renderer
mode2: Draw sprite2 as triangles that can *not* be recombined as rect by software renderer
       Use an 'indices' array
This commit is contained in:
Sylvain 2021-04-06 21:38:24 +02:00 committed by Sylvain Becker
parent 47db47c1cc
commit 53bcb3e0e9
1 changed files with 211 additions and 8 deletions
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219
test/testsprite2.c
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@ -39,6 +39,7 @@ static int sprite_w, sprite_h;
static SDL_BlendMode blendMode = SDL_BLENDMODE_BLEND;
static Uint32 next_fps_check, frames;
static const Uint32 fps_check_delay = 5000;
static int use_rendergeometry = 0;
/* Number of iterations to move sprites - used for visual tests. */
/* -1: infinite random moves (default); >=0: enables N deterministic moves */
@ -175,7 +176,38 @@ MoveSprites(SDL_Renderer * renderer, SDL_Texture * sprite)
temp.y = 1;
temp.w = sprite_w;
temp.h = sprite_h;
SDL_RenderFillRect(renderer, &temp);
if (use_rendergeometry == 0) {
SDL_RenderFillRect(renderer, &temp);
} else {
/* Draw two triangles, filled, uniform */
SDL_Color color;
SDL_Vertex verts[3];
SDL_zeroa(verts);
color.r = 0xFF;
color.g = 0xFF;
color.b = 0xFF;
color.a = 0xFF;
verts[0].position.x = temp.x;
verts[0].position.y = temp.y;
verts[0].color = color;
verts[1].position.x = temp.x + temp.w;
verts[1].position.y = temp.y;
verts[1].color = color;
verts[2].position.x = temp.x + temp.w;
verts[2].position.y = temp.y + temp.h;
verts[2].color = color;
SDL_RenderGeometry(renderer, NULL, verts, 3, NULL, 0);
verts[1].position.x = temp.x;
verts[1].position.y = temp.y + temp.h;
verts[1].color = color;
SDL_RenderGeometry(renderer, NULL, verts, 3, NULL, 0);
}
SDL_RenderCopy(renderer, sprite, NULL, &temp);
temp.x = viewport.w-sprite_w-1;
temp.y = 1;
@ -220,7 +252,7 @@ MoveSprites(SDL_Renderer * renderer, SDL_Texture * sprite)
}
}
/* Countdown sprite-move iterations and disable color changes at iteration end - used for visual tests. */
if (iterations > 0) {
iterations--;
@ -232,11 +264,160 @@ MoveSprites(SDL_Renderer * renderer, SDL_Texture * sprite)
}
/* Draw sprites */
for (i = 0; i < num_sprites; ++i) {
position = &positions[i];
if (use_rendergeometry == 0) {
for (i = 0; i < num_sprites; ++i) {
position = &positions[i];
/* Blit the sprite onto the screen */
SDL_RenderCopy(renderer, sprite, NULL, position);
/* Blit the sprite onto the screen */
SDL_RenderCopy(renderer, sprite, NULL, position);
}
} else if (use_rendergeometry == 1) {
/*
* 0--1
* | /|
* |/ |
* 3--2
*
* Draw sprite2 as triangles that can be recombined as rect by software renderer
*/
SDL_Vertex *verts = (SDL_Vertex *) SDL_malloc(num_sprites * sizeof (SDL_Vertex) * 6);
SDL_Vertex *verts2 = verts;
if (verts) {
SDL_Color color;
SDL_GetTextureColorMod(sprite, &color.r, &color.g, &color.b);
SDL_GetTextureAlphaMod(sprite, &color.a);
for (i = 0; i < num_sprites; ++i) {
position = &positions[i];
/* 0 */
verts->position.x = position->x;
verts->position.y = position->y;
verts->color = color;
verts->tex_coord.x = 0.0f;
verts->tex_coord.y = 0.0f;
verts++;
/* 1 */
verts->position.x = position->x + position->w;
verts->position.y = position->y;
verts->color = color;
verts->tex_coord.x = 1.0f;
verts->tex_coord.y = 0.0f;
verts++;
/* 2 */
verts->position.x = position->x + position->w;
verts->position.y = position->y + position->h;
verts->color = color;
verts->tex_coord.x = 1.0f;
verts->tex_coord.y = 1.0f;
verts++;
/* 0 */
verts->position.x = position->x;
verts->position.y = position->y;
verts->color = color;
verts->tex_coord.x = 0.0f;
verts->tex_coord.y = 0.0f;
verts++;
/* 2 */
verts->position.x = position->x + position->w;
verts->position.y = position->y + position->h;
verts->color = color;
verts->tex_coord.x = 1.0f;
verts->tex_coord.y = 1.0f;
verts++;
/* 3 */
verts->position.x = position->x;
verts->position.y = position->y + position->h;
verts->color = color;
verts->tex_coord.x = 0.0f;
verts->tex_coord.y = 1.0f;
verts++;
}
/* Blit sprites as triangles onto the screen */
SDL_RenderGeometry(renderer, sprite, verts2, num_sprites * 6, NULL, 0);
SDL_free(verts2);
}
} else if (use_rendergeometry == 2) {
/* 0-----1
* |\ A /|
* | \ / |
* |D 2 B|
* | / \ |
* |/ C \|
* 3-----4
*
* Draw sprite2 as triangles that can *not* be recombined as rect by software renderer
* Use an 'indices' array
*/
SDL_Vertex *verts = (SDL_Vertex *) SDL_malloc(num_sprites * sizeof (SDL_Vertex) * 5);
SDL_Vertex *verts2 = verts;
int *indices = (int *) SDL_malloc(num_sprites * sizeof (int) * 4 * 3);
int *indices2 = indices;
if (verts && indices) {
int pos = 0;
SDL_Color color;
SDL_GetTextureColorMod(sprite, &color.r, &color.g, &color.b);
SDL_GetTextureAlphaMod(sprite, &color.a);
for (i = 0; i < num_sprites; ++i) {
position = &positions[i];
/* 0 */
verts->position.x = position->x;
verts->position.y = position->y;
verts->color = color;
verts->tex_coord.x = 0.0f;
verts->tex_coord.y = 0.0f;
verts++;
/* 1 */
verts->position.x = position->x + position->w;
verts->position.y = position->y;
verts->color = color;
verts->tex_coord.x = 1.0f;
verts->tex_coord.y = 0.0f;
verts++;
/* 2 */
verts->position.x = position->x + position->w / 2.0f;
verts->position.y = position->y + position->h / 2.0f;
verts->color = color;
verts->tex_coord.x = 0.5f;
verts->tex_coord.y = 0.5f;
verts++;
/* 3 */
verts->position.x = position->x;
verts->position.y = position->y + position->h;
verts->color = color;
verts->tex_coord.x = 0.0f;
verts->tex_coord.y = 1.0f;
verts++;
/* 4 */
verts->position.x = position->x + position->w;
verts->position.y = position->y + position->h;
verts->color = color;
verts->tex_coord.x = 1.0f;
verts->tex_coord.y = 1.0f;
verts++;
/* A */
*indices++ = pos + 0;
*indices++ = pos + 1;
*indices++ = pos + 2;
/* B */
*indices++ = pos + 1;
*indices++ = pos + 2;
*indices++ = pos + 4;
/* C */
*indices++ = pos + 3;
*indices++ = pos + 2;
*indices++ = pos + 4;
/* D */
*indices++ = pos + 3;
*indices++ = pos + 2;
*indices++ = pos + 0;
pos += 5;
}
}
/* Blit sprites as triangles onto the screen */
SDL_RenderGeometry(renderer, sprite, verts2, num_sprites * 5, indices2, num_sprites * 4 * 3);
SDL_free(verts2);
SDL_free(indices2);
}
/* Update the screen! */
@ -331,6 +512,20 @@ main(int argc, char *argv[])
} else if (SDL_strcasecmp(argv[i], "--cyclealpha") == 0) {
cycle_alpha = SDL_TRUE;
consumed = 1;
} else if (SDL_strcasecmp(argv[i], "--use-rendergeometry") == 0) {
if (argv[i + 1]) {
if (SDL_strcasecmp(argv[i + 1], "mode1") == 0) {
/* Draw sprite2 as triangles that can be recombined as rect by software renderer */
use_rendergeometry = 1;
} else if (SDL_strcasecmp(argv[i + 1], "mode2") == 0) {
/* Draw sprite2 as triangles that can *not* be recombined as rect by software renderer
* Use an 'indices' array */
use_rendergeometry = 2;
} else {
return -1;
}
}
consumed = 2;
} else if (SDL_isdigit(*argv[i])) {
num_sprites = SDL_atoi(argv[i]);
consumed = 1;
@ -340,7 +535,15 @@ main(int argc, char *argv[])
}
}
if (consumed < 0) {
static const char *options[] = { "[--blend none|blend|add|mod]", "[--cyclecolor]", "[--cyclealpha]", "[--iterations N]", "[num_sprites]", "[icon.bmp]", NULL };
static const char *options[] = {
"[--blend none|blend|add|mod]",
"[--cyclecolor]",
"[--cyclealpha]",
"[--iterations N]",
"[--use-rendergeometry mode1|mode2]",
"[num_sprites]",
"[icon.bmp]",
NULL };
SDLTest_CommonLogUsage(state, argv[0], options);
quit(1);
}
@ -374,7 +577,7 @@ main(int argc, char *argv[])
quit(2);
}
/* Position sprites and set their velocities using the fuzzer */
/* Position sprites and set their velocities using the fuzzer */
if (iterations >= 0) {
/* Deterministic seed - used for visual tests */
seed = (Uint64)iterations;