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SW_RenderGeometry: remove a few static analysis false positives (see bug #4600)

This commit is contained in:
Sylvain 2021-08-27 07:16:40 +02:00
parent a47f59bbe5
commit b17aa5d080
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GPG Key ID: 5F87E02E5BC0939E
1 changed files with 25 additions and 21 deletions
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30
src/render/SDL_render.c
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@ -3424,6 +3424,7 @@ remap_indices(
return k;
}
#define DEBUG_SW_RENDER_GEOMETRY 0
/* For the software renderer, try to reinterpret triangles as SDL_Rect */
static int SDLCALL
SDL_SW_RenderGeometryRaw(SDL_Renderer *renderer,
@ -3437,7 +3438,6 @@ SDL_SW_RenderGeometryRaw(SDL_Renderer *renderer,
int i;
int retval = 0;
int count = indices ? num_indices : num_vertices;
const int debug = 0;
int prev[3]; /* Previous triangle vertex indices */
int texw = 0, texh = 0;
SDL_BlendMode blendMode = SDL_BLENDMODE_NONE;
@ -3456,8 +3456,10 @@ SDL_SW_RenderGeometryRaw(SDL_Renderer *renderer,
for (i = 0; i < count; i += 3) {
int k0, k1, k2; /* Current triangle indices */
int is_quad = 1;
#if DEBUG_SW_RENDER_GEOMETRY
int is_uniform = 1;
int is_rectangle = 1;
#endif
int A = -1; /* Top left vertex */
int B = -1; /* Bottom right vertex */
int C = -1; /* Third vertex of current triangle */
@ -3575,7 +3577,9 @@ SDL_SW_RenderGeometryRaw(SDL_Renderer *renderer,
/* ok */
} else {
is_quad = 0;
#if DEBUG_SW_RENDER_GEOMETRY
is_rectangle = 0;
#endif
}
xy2_ = (const float *)((const char*)xy + C2 * xy_stride);
@ -3586,7 +3590,9 @@ SDL_SW_RenderGeometryRaw(SDL_Renderer *renderer,
/* ok */
} else {
is_quad = 0;
#if DEBUG_SW_RENDER_GEOMETRY
is_rectangle = 0;
#endif
}
}
@ -3600,7 +3606,9 @@ SDL_SW_RenderGeometryRaw(SDL_Renderer *renderer,
/* ok */
} else {
is_quad = 0;
#if DEBUG_SW_RENDER_GEOMETRY
is_uniform = 0;
#endif
}
}
@ -3633,34 +3641,30 @@ SDL_SW_RenderGeometryRaw(SDL_Renderer *renderer,
SDL_SetTextureAlphaMod(texture, col0_.a);
SDL_SetTextureColorMod(texture, col0_.r, col0_.g, col0_.b);
SDL_RenderCopyF(renderer, texture, &s, &d);
if (debug) {
#if DEBUG_SW_RENDER_GEOMETRY
SDL_Log("Rect-COPY: RGB %d %d %d - Alpha:%d - texture=%p: src=(%d,%d, %d x %d) dst (%f, %f, %f x %f)", col0_.r, col0_.g, col0_.b, col0_.a,
(void *)texture, s.x, s.y, s.w, s.h, d.x, d.y, d.w, d.h);
}
#endif
} else if (d.w != 0.0f && d.h != 0.0f) { /* Rect, no texture */
SDL_SetRenderDrawBlendMode(renderer, SDL_BLENDMODE_BLEND);
SDL_SetRenderDrawColor(renderer, col0_.r, col0_.g, col0_.b, col0_.a);
SDL_RenderFillRectF(renderer, &d);
if (debug) {
#if DEBUG_SW_RENDER_GEOMETRY
SDL_Log("Rect-FILL: RGB %d %d %d - Alpha:%d - texture=%p: src=(%d,%d, %d x %d) dst (%f, %f, %f x %f)", col0_.r, col0_.g, col0_.b, col0_.a,
(void *)texture, s.x, s.y, s.w, s.h, d.x, d.y, d.w, d.h);
}
} else {
if (debug) {
SDL_Log("Rect-DISMISS: RGB %d %d %d - Alpha:%d - texture=%p: src=(%d,%d, %d x %d) dst (%f, %f, %f x %f)", col0_.r, col0_.g, col0_.b, col0_.a,
(void *)texture, s.x, s.y, s.w, s.h, d.x, d.y, d.w, d.h);
}
#endif
}
prev[0] = -1;
} else {
/* Render triangles */
if (prev[0] != -1) {
if (debug) {
#if DEBUG_SW_RENDER_GEOMETRY
SDL_Log("Triangle %d %d %d - is_uniform:%d is_rectangle:%d", prev[0], prev[1], prev[2], is_uniform, is_rectangle);
}
#endif
retval = QueueCmdGeometry(renderer, texture,
xy, xy_stride, color, color_stride, uv, uv_stride,
num_vertices, prev, 3, 4, renderer->scale.x, renderer->scale.y);
@ -3679,9 +3683,9 @@ SDL_SW_RenderGeometryRaw(SDL_Renderer *renderer,
if (prev[0] != -1) {
/* flush the last triangle */
if (debug) {
#if DEBUG_SW_RENDER_GEOMETRY
SDL_Log("Last triangle %d %d %d", prev[0], prev[1], prev[2]);
}
#endif
retval = QueueCmdGeometry(renderer, texture,
xy, xy_stride, color, color_stride, uv, uv_stride,
num_vertices, prev, 3, 4, renderer->scale.x, renderer->scale.y);