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opengl: More work on making line drawing match software renderer.

This commit is contained in:
Ryan C. Gordon 2021-01-11 20:40:11 -05:00
parent 8442754912
commit b99543b682
3 changed files with 6 additions and 6 deletions
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4
src/render/opengl/SDL_render_gl.c
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@ -914,9 +914,9 @@ GL_QueueDrawLines(SDL_Renderer * renderer, SDL_RenderCommand *cmd, const SDL_FPo
const GLfloat yend = verts[3]; const GLfloat yend = verts[3];
if (ystart == yend) { /* horizontal line */ if (ystart == yend) { /* horizontal line */
verts[2] += (xend > xstart) ? 1.0f : -1.0f; verts[(xend > xstart) ? 2 : 0] += 1.0f;
} else if (xstart == xend) { /* vertical line */ } else if (xstart == xend) { /* vertical line */
verts[3] += (yend > ystart) ? 1.0f : -1.0f; verts[(yend > ystart) ? 3 : 1] += 1.0f;
} else { /* bump a pixel in the direction we are moving in. */ } else { /* bump a pixel in the direction we are moving in. */
const GLfloat deltax = xend - xstart; const GLfloat deltax = xend - xstart;
const GLfloat deltay = yend - ystart; const GLfloat deltay = yend - ystart;

4
src/render/opengles/SDL_render_gles.c
View File

@ -587,9 +587,9 @@ GLES_QueueDrawLines(SDL_Renderer * renderer, SDL_RenderCommand *cmd, const SDL_F
const GLfloat yend = verts[3]; const GLfloat yend = verts[3];
if (ystart == yend) { /* horizontal line */ if (ystart == yend) { /* horizontal line */
verts[2] += (xend > xstart) ? 1.0f : -1.0f; verts[(xend > xstart) ? 2 : 0] += 1.0f;
} else if (xstart == xend) { /* vertical line */ } else if (xstart == xend) { /* vertical line */
verts[3] += (yend > ystart) ? 1.0f : -1.0f; verts[(yend > ystart) ? 3 : 1] += 1.0f;
} else { /* bump a pixel in the direction we are moving in. */ } else { /* bump a pixel in the direction we are moving in. */
const GLfloat deltax = xend - xstart; const GLfloat deltax = xend - xstart;
const GLfloat deltay = yend - ystart; const GLfloat deltay = yend - ystart;

4
src/render/opengles2/SDL_render_gles2.c
View File

@ -811,9 +811,9 @@ GLES2_QueueDrawLines(SDL_Renderer * renderer, SDL_RenderCommand *cmd, const SDL_
const GLfloat yend = verts[3]; const GLfloat yend = verts[3];
if (ystart == yend) { /* horizontal line */ if (ystart == yend) { /* horizontal line */
verts[2] += (xend > xstart) ? 1.0f : -1.0f; verts[(xend > xstart) ? 2 : 0] += 1.0f;
} else if (xstart == xend) { /* vertical line */ } else if (xstart == xend) { /* vertical line */
verts[3] += (yend > ystart) ? 1.0f : -1.0f; verts[(yend > ystart) ? 3 : 1] += 1.0f;
} else { /* bump a pixel in the direction we are moving in. */ } else { /* bump a pixel in the direction we are moving in. */
const GLfloat deltax = xend - xstart; const GLfloat deltax = xend - xstart;
const GLfloat deltay = yend - ystart; const GLfloat deltay = yend - ystart;